How To Reset Rheem Electric Water Heater

Rheem Water Heater Troubleshooting & How to Guide

Rheem manufactures a high-quality line of water heaters for both residential and commercial use. The devices are unquestionably dependable, long-lasting, and provide excellent value for money. However, a problem with your Rheem water heater may emerge, and it will need to be repaired in order for it to continue to operate smoothly and effectively. It is beneficial to do some easy troubleshooting techniques on your water heater before calling a service for a problem you may be experiencing with it.

How to diagnose and repair a Rheem water heater

Not enough or no hot water from the heater

  1. Examine the amount of water consumed by your home. If the water heater’s capacity is exceeded, it is necessary to wait for the water heater to completely recover. Examine the electrical supply to the water heater. Check for blown fuses or a tripped circuit breaker in the electrical system. Check that the disconnect switch, if one is present, is in the “on” position. Make sure the water heater is getting fuel if it is a gas water heater by checking that any cutoff valves in the gas line are switched to the on position. Examine and service any additional gas water heater issues you may be experiencing with a certified expert
  2. Check the water heater’s thermostat to ensure that it is set properly, and make any necessary adjustments. Examine to make sure that all faucets are closed and not leaking
  • If your water heater is making a rumbling noise, remove the heating components and clean them well. A mineral scale build-up on the elements is the cause of this
  • If the relief valve produces a popping sound or drains water, it is the result of high pressure in the plumbing system. Make an appointment with a licensed plumber to get your system inspected
  • The temperature of the water flowing out of the faucet should be adjusted if it is too hot.

Why is my Rheem water heater not heating?

There might be a number of factors contributing to your water heater not heating:

  1. It is possible that your electric supply has been shut off and that no electricity is being supplied to your water heater. You must ensure that the electric supply to the water heater, as well as the disconnect switch, if applicable, are both turned on. It is possible that your electric service will be disrupted. Check to see if the electricity is on in your home and the adjacent homes. Immediately notify your local electric provider if you experience a power outage in your house. It is possible that a fuse has blown or that a circuit breaker has tripped. Check for blown fuses and circuit breakers that have been triggered. If the fuse has blown, replace it or reset the circuit breaker to resolve the problem. After detecting extremely high water temperatures, the temperature limiting control (ECO) may have shut down the power circuit to the heating element, resulting in a fire. You must manually reset the ECO in order to resolve the issue. It’s possible that the thermostat is set too low. Adjustable surface mounted thermostat positioned below the jacket access panel may be used to alter the temperature of water in the water heater by turning the temperature dial on the thermostat
  2. Hot water faucets that are leaking or are open. Check to see that all faucets are turned off. During the winter months, the temperature of the cold water entering the system may be lower. This is quite normal. It takes longer for the cold water entry to heat up. If the problem persists after addressing the concerns listed above, it is possible that there is a problem with your wiring. Check that the voltage of the electrical source matches the rating plate on your water heater. The branch circuit wire, as well as the fuses or circuit breakers, should be of the appropriate size. Additionally, check to see that the electrical connections are secure and that the unit is correctly grounded. Seek assistance from the installation manual that came with your machine.

How do I reset my Rheem water heater?

Electric home water heaters from Rheem (HE, GE, PE, and SE Series) are fitted with a combined thermostat and temperature limiting control (ECO) that is situated above the heating element and in direct contact with the tank surface, as shown in the illustration. If the water temperature rises to an extremely high level for whatever reason, the ECO shuts out the power circuit to the heating element. Once the control is activated, you must manually close and reopen it. To reset the temperature limiting control, perform the following steps:

  1. Immediately turn off the water heater’s electricity. Remove the jacket access panels as well as the insulation from the jacket. Do not remove the protective cover from the thermostat. Press the red reset button to start over. Before turning on the water heater’s electricity, make sure that the insulation and access panels have been replaced.

Rheem water heater troubleshooting codes (continuous flow water heater)

Troubleshooting codes and error messages are displayed on the LED display located on the front of your Rheem continuous flow water heater. The following is a list of the various error codes, as well as what they indicate:

  1. Error code 03-EZ Link is shown. Imperfect Combustion Alarm is the fifth error code. Code 10 indicates an abnormally low rate of combustion. At startup, the error number 11 indicates that the ignition has failed. Flame failure during operation is indicated by error code 12. Overheating is the cause of error code 14. Extremely high temperature is indicated by error code 15. The temperature of the outlet water is too high, resulting in error code 16. Error code 24 indicates that the operational switch is malfunctioning. Heat exchanger outlet temperature is too low, resulting in error code 29. Error number 31 indicates that the inlet thermistor is open circuit. Heat exchanger thermistor open circuit is the cause of error code 32. Error code 33 indicates that the outlet thermistor is open circuit. Error number 34 indicates that the ambient air thermistor is open circuit. Thermistor connections have been crossed, resulting in error code 35. Error number 51 indicates a malfunction in the gas cut-off (SV0 failure). Error number 52 indicates a failure of the P.G.R.F. control system. Error number 56 indicates a failure of the bypass solenoid. Error code 61 indicates an abnormal fan speed or a failed fan. Error code 65 indicates a problem with the water volume control motor. Fault in the Water By-Pass Control
  2. Error code 66. Error number 71 indicates a breakdown in the control of the G.I.S valve. Error code 72 indicates that a fake flame has been detected. Error number 73 indicates that the vent type control data has failed. Error number 74, 75, or 76 indicates a difficulty with communication between the remote controller and the water heater. Fan motor current detection failure is indicated by error code 79. Error number 80 indicates a malfunctioning gas shutoff. Error number 81 indicates that there was no false flame detected. A functional fault on the gas type circuit board is indicated by error code 82. Fan motor ventilation has decreased, resulting in error code 90. Error code 99 indicates a decrease in fan motor ventilation (which causes the operation to cease).

Rheem water heater reset button location

When using a Rheem water heater, the reset button is the red button that is placed in the middle of the limit switch, directly above the water heater thermostat.

Rheem water heater blinking light codes

When using a Rheem water heater, the reset button is the red button that is placed in the middle of the limit switch, immediately above the water heater thermostat.

For controller software version HPV 3.1, HPV 3.2 or no HPV identification:

  1. When using a Rheem water heater, the reset button is the red button that can be found in the middle of the limit switch, immediately above the water heater thermostat.

Controller version HPV 4.0 or higher

It will flash green if there is no fault present, and it will do so to show the operation sequence number the heat pump is now running in:

  1. Green solid represents Sequence 0
  2. Green 2 flashes represent Sequence 2
  3. Green 3 flashes represent Sequence 3
  4. And green 4 flashes represent Sequence 4.

the color green represents the beginning of the sequence 0; the color green represents the second sequence; green represents the third sequence; green represents the fourth sequence; the color green represents the fifth sequence; and the color green represents the sixth sequence.

  1. Power supply failure or system in limp mode with the call for heat satisfied
  2. Green 1 flash, Red 0- T3 (comp dis)60 0 C in sequence 0 (This circumstance causes the compressor to start late due to a delay). This is not seen as a flaw in the system.) green zero, red solid- T4 (ambient air)0 0 C (ambient temperature is too low to operate heat pump.) In this case, there is no such thing as a problem.)
  3. Green 0, Red 1 flash- Any Sensor Strip Sensor Fault Thermistor T0 Fault
  4. Green 0, Red 2 flashes- Water circ fault TO (water outlet)80 0 C
  5. Green 0, Red 3 flashes- T2 (Evaporator)-3 0 C
  6. Green 0, Red 4 flashes- Comp/refrig fault T3T4 + 15 0 C (in seq3)
  7. Green 0, Red 5 flashes- Comp/refrig fault T0 –T18 0 C (in seq4)
  8. Green 0, Red (simultaneously) A fault in the thermistor T1 is indicated by three green flashes followed by three red flashes (all occurring at the same time). A fault in the thermistor T2 is indicated by four green flashes followed by four red flashes (simultaneously) – Thermistor T3 Fault
  9. Green 5 flashes, Red 5 flashes (both at the same time)- Thermistor T4 Fault
  10. Green 5 flashes, Red 5 flashes (both at the same time)- Thermistor T5 Fault
  11. Green 5 flashes, Red 5 flashes (both at the same time)

Why is my water heater only lukewarm?

Because of the high demand for hot water, the water temperature may be lower than usual. It is possible that your water use has exceeded the capacity of the water heater. It is necessary to wait for the heater to recover when an exceptional demand has occurred. Additionally, a defective tempering valve that is overly chilling your hot water might be the cause of this problem. Have your plumbing system inspected by a professional and, if required, replace the valve. If you have a solar water heater, double-check that the booster is being utilized in accordance with the installation instructions for your particular model.

If you have a timer set, you will need to make certain that enough time is provided for the water to heat sufficiently to fulfill the demands of your home. The temperature of the water heater will be limited to 50 degrees Celsius if you have a 50 degree Celsius temperature limited water heater.

Rheem gas water heater pilot light how to and troubleshooting

Pilot lights on Rheem water heaters must be manually ignited using the piezo ignitor striker that is incorporated within the water heater. To ignite the pilot light on your water heater, follow the instructions outlined below:

  1. Make a clockwise rotation of the gas knob on your Rheem water heater until it is in the “Off” position
  2. Then make a counterclockwise rotation of the temperature dial on your water heater until it is at the lowest temperature setting. To enable any gas in the water heater to flow through, wait 5 minutes. Remove the exterior door of your water heater by lifting it up. In order to put the gas knob in the “Pilot” position, turn it counterclockwise. To turn off the gas, depress the red button to the left of the gas knob. While holding down the button, continually push the piezo ignitor striker, which is situated on the immediate right side of the gas knob, until the pilot light comes on. The pilot light may be seen through the viewing glass on the inside of the water heater’s inner door. After the pilot is lighted, continue to hold down the red button for 1 minute, and then let go of the button. Replacement of the outer door of your water heater helps ensure that the pilot light remains lit. Make a counterclockwise rotation of the gas knob until it is in the “On” position. Set the hot water temperature slider to the temperature that you desire for your water

Pilot light won’tlight or stay lit

The reason why your Rheem water heater’s pilot light isn’t lighting or staying lighted is that the gas line to the water heater is clogged. Other probable reasons of this problem include a defective thermocouple, a malfunctioning gas valve, or anything as little as a draft entering through a gap in the wall or beneath the door frame. In order to diagnose and resolve the issue, follow these steps:

  • Turn the handle on the gas line valve until it is parallel to the gas pipe and then turn the handle back to the closed position. Turn the gas control knob to the “Pilot” position and push it all the way into the gas valve. Is there a slight hissing sound you can hear? If this is not the case, there may be a clog in the pilot supply tube or a problem with the heater gas tube. Turn off the gas, remove the pilot supply tube with a little wrench, and clean it out using compressed air when it has been disconnected. If the problem persists, it is possible that the gas valve will need to be cleaned or replaced. If you hear a hissing sound when you push the gas control valve, you should turn on the pilot. If the flame begins to burn but quickly goes out, look for drafts in the room. If you are unable to locate the source of the draft in the room, check the vent. It should reach 18-24 inches beyond the roof line and be clear of any impediments, according to the manufacturer. If the pilot is too short, even a slight breeze will cause it to drift away. If the flame remains lighted while you hold down the button but goes out when you release it, the thermocouple has to be adjusted. This is the little device, which is shaped like a bulb and is situated next to the pilot opening. Check to verify that the thermocouple is not loose or has shifted slightly out of position
  • If fixing the thermocouple does not solve the problem, replace the thermocouple. To detach all components from the gas valve, first turn off the gas valve and then remove the thermocouple, pilot tube, burner gas supply, and pilot igniter. Then remove the sealed access door. After replacing the thermocouple, install a new sealed access door to prevent carbon monoxide from entering your house. If the preceding measures do not resolve the problem, contact your gas or propane supplier to have your service lines inspected. It is possible that the gas has been polluted by water or oil, which has caused the gas flow to be restricted.

Also, have a look at this: Heating system troubleshooting by Mr. Heater How-to Instructions

Rheem water heater overheating

The following are possible reasons of an overheated water heater:

  • Excessive heat generated by an inoperative thermostat
  • Excessive mineral content
  • Clogged pressure release valve

If your Rheem water heater is overheating, use these troubleshooting steps to identify and resolve the issue.

  1. Check the thermostat and set it to a lower temperature if required. Occasionally, the dial is mistakenly turned up too much
  2. As a result, mineral deposits form around the heating element. Due to the accumulation of silt on these heating components, they must work harder in order to heat the water. This might result in the elements overheating, which would explain why your water heater is unexpectedly hot to the touch. Mineral scale buildup on the heating components should be checked. It may be essential to remove and clean the heating components. The pressure relief valve allows any built-up steam to escape from the water heater’s internal pressure chamber. If this valve is clogged, your hot water will be hotter than normal when it comes out. If you hear the sound of water boiling within your water tank, you must immediately turn off the electricity to your heater since this might result in an explosion. After you’ve turned off your water heater, you should contact an experienced plumber to get it checked out. The thermostat may be defective if your water heater continues to overheat even after you have made the necessary adjustments to the thermostat. You’ll need to get a new thermostat installed. The valve component on your gas water heater should be replaced if changing the dial does not resolve the problem.
See also:  What Is The Best Brand Of Tankless Water Heater

How to Reset an Electric Water Heater in Two Easy Steps

Take a look at this. It’s a chilly Monday morning in the Arctic. If your husband hadn’t threatened to suffocate you in your sleep, you would have pushed the snooze button at least a seventh time before you finally got out of bed in the morning. Instead, you sigh heavily, pull the covers back over your head, and go to the restroom. You turn on the shower, wait for the beautiful steam to rise up over the curtain, and then step into the shower with your feet up. But, two milliseconds after you finish soaping up, your pleasant hot shower turns into sleet on the ground.

The hot water is gone bleepity-bleep-bleep, and I have no idea what occurred.

But what about that one?

I’m talking about the one when you’re fumbling around for a towel in an attempt to keep your teeth from chattering?

Why Electric Water Heaters Quit

So, what exactly is the source of Hot-Showerus Interruptus? Alternatively, if you have an electric water heater, it is likely that the unit’s reset button has been activated. Those buttons have a tendency to trip at unpredictable intervals. However, it frequently occurs as a result of the following:

  • The thermostat in the device is not working properly
  • Even the reset button itself isn’t working properly
  • The high-limit switch, which is a component of the unit that prevents water from becoming excessively hot, is no longer operational. There is a short in the heating element. There’s a snag in the wiring someplace

Recall that the reset button on a water heater has a vital function: it interrupts power in the case of a malfunction, such as a power surge or a malfunctioning thermostat, to prevent further damage. If your water heater loses power on a regular basis, it is probable that there is an issue that needs to be repaired by a competent Culpeper County plumbing contractor. Please keep in mind that the combination of electricity and water may be extremely harmful, if not lethal. Never be afraid to bring in a professional to double-check your work.

For the purposes of this piece, we’ll assume that your water heater is normally conscientious and that this isn’t a recurrent problem. Assuming you have this understanding, let’s follow through two easy steps to get it back up and running.

First, check your electrical panel.

Locate the circuit labeled “water heater” on your electrical panel (which is normally located in the garage, basement, or storage closet), and turn it on.

  • If the breaker is currently in the OFF position, flip it to the ON position. If it remains in place, you may generally conclude that everything that has happened has been an accident and that you can go about your business as usual. However, if the switch returns to the OFF position, either immediately or shortly thereafter, contact an electrician. If the breaker is currently in the ON position, flip it to the OFF position.

Then, push the water heater reset button(s).

Turn on the circuit breaker if it is currently in the OFF state. If it remains in place, you may generally presume that everything that has happened has been an accident and that you can get back to work. An electrician should be contacted if, however, the switch returns to the OFF position immediately or shortly thereafter; The breaker should be switched to its OFF position if it’s currently in the ON position.

  • If the electricity to your water heater has been restored, you’re good to go. (Congratulations on your accomplishment!) Just keep in mind that it will take a few hours for the water in the tank to reheat. If your water heater is still not working, turn off the circuit breaker and contact us so that we can figure out what’s wrong and get the hot water flowing again. If your water heater begins to operate but the reset button trips again, turn the breaker back to the OFF position and call us for further assistance. As previously said, your reset button is a safety precaution, therefore if it continually tripping, there is something wrong with your computer.

Is Your Water Heater Trying to Tell You Something?

Your water heater should be operational at this point. (Excellent work! Just keep in mind that it will take several hours for the water in the tank to warm. Then, if your water heater is still not working, turn off the circuit breaker and call us so that we can figure out what’s wrong and get the hot water flowing again. If your water heater begins to operate but the reset button trips again, turn the breaker back to the OFF position and call us for further assistance. As previously said, your reset button is a safety function, therefore if it continually tripping, there is something wrong with your device.

How to Reset Rheem Tankless Water Heater – Quick Fix

The majority of the time, a well maintained Rheem tankless water heater will function properly. However, if they become malfunctioning on sometimes, you may need to reset them to their factory settings. When it comes to resetting a Rheem tankless water heater, the procedure is simple, safe, and quick. To begin, check to see if the unit is operational. After that, open the front panel and look for the red reset button, which should be near the thermostat. Hold it in place with your fingers until it snaps into place.

The following sections provide an overview of the different reasons you might need to reset your Rheem tankless water heater, as well as step-by-step instructions for resetting and answers to associated FAQs.

Why Do I Have to Keep Resetting My Tankless Water Heater?

The following are some probable reasons why you may need to reset your Rheem tankless water heater on a regular basis.


Water heaters are designed to provide a specified amount of hot water. Whenever your need for hot water exceeds the capacity of your water heater, it will only provide cold water until your demand for hot water decreases. Although certain faucets and appliances may be turned off, the unit may continue to generate cold water. In this case, resetting the device to its factory or default settings would be the best remedy. Related:Rheem Water Heater – Troubleshooting Guide (Extended Edition)

The Reset Button Keeps Tripping

A certain amount of hot water may be stored in a water heater. Whenever your demand for hot water exceeds the capacity of your water heater, it will only provide cold water until the demand for hot water drops again.

Although certain faucets and appliances may be turned off, the unit may continue to provide cold water. In this case, resetting the device to its factory or default settings would be the most appropriate remedy. Related:Rheem Water Heater – Troubleshooting Guide (Ultimate Edition)

  • Thermostat that is not working properly
  • A loose electrical connection The heating element has a short circuit
  • Faulty reset button
  • Faulty high-switch limit

If There Is an Error Code Displayed

When a Rheem water heater is malfunctioning, it will occasionally just display the appropriate Rheem trouble code. Other times, it may be necessary to reset the unit and turn it off. The following are the most typical Rheem water heater fault codes that might result in the reset button being triggered:

  • Error number 00 indicates that the water heater is running continuously. It is possible that the clogged vent exhaust is causing the insufficient flow of air into the combustion chamber, which is indicated by error code 5. Code 11 indicates an ignition failure that can be caused by a variety of factors including partially opened or closed valves, high gas pressure and volume, an open or short-circuited gas solenoid valve, and a faultyigniter. It is only applicable to indoor Rheem tankless water heaters that this error code exists. It implies incorrect combustion, which might be caused by a faulty flame rod or fan motor, or by a lack of sufficient air intake. It is possible that an airflow restriction to the combustion chambers, a faulty heat exchanger, or foreign materials in or around the combustion chambers and exhaust pipes will result in an overheated film wrap. Error code 15 indicates that the heat exchanger has been operating at a temperature of 207F or higher for more than 15 seconds. A buildup of limescale in the unit and a blocked cold water intake line, a defective heat exchanger thermistor, or a partially open or closed water heaters inlet valve may all be to blame. Error code 16- Indicates that the outlet water temperature is higher than the thermostat setting. A build-up of limescale in the heat exchanger, an airflow obstruction, a malfunctioning outlet thermistor, or a malfunctioning heat exchanger thermistor are all possible causes of this mistake. Code 24- Switch malfunction, which may be caused by a damaged or malfunctioning control board, or by a faulty switch. Communication failure with the remote control, which may be caused by damaged or lost connections on the remote control wiring
  • Error code 99, which indicates that the blower motor cannot vent due to a blocked venting and exhaust flue, blocked heat exchanger, blocked combustion, or blocked inlet filter
  • Error code 100, which indicates that the blower motor has failed to vent due to a blocked venting and exhaust flue, blocked heat exchanger, blocked combustion, or failed inlet filter

How Do I Reset My Tankless Water Heater?

A step-by-step procedure for resetting your Rheem water heater is provided below:

  1. Find the water heater circuit on the electrical panel by going to the panel. If it has been turned off, turn it back on. Remove the lid from the panel and look beneath the insulation for the reset button. Then press it inwards until it snaps into place, and then let go. Replace the panel cover with a new one. If the gas valve has been unplugged, it must be reconnected. The water heater should be able to turn on and function properly. If there was an error code before to resetting, it will disappear if the issue has been rectified
  2. Otherwise, it will remain.

What Should I Do If Resetting my Rheem Water Heater Does Not Resolve the Issue?

It is possible that you may need to push the reset button up to three times in order for the problem to be resolved. However, in the majority of circumstances, a single reset should be sufficient to restore functionality to your tank or eliminate issues. If the reset does not work, you should call a professional plumber or a water tank specialist to get it corrected. Keep in mind that if there is an electrical failure, it may be fatal, especially if you attempt to fix the heater yourself and the water comes into contact with the electricity or vice versa, which is dangerous.

It is possible that the firm may send a technician to your home or provide a recommendation.

Where Is the Reset Button on a Rheem Hot Water Heater?

The reset button on Rheem water heaters is often a red button that is positioned near the thermostat, in the middle of the limit switch, and it can be found on most models. It will be necessary to remove the metal panel on the unit in order to have access to it. The red button may be found beneath the insulation on the wall. If it has tripped, it is normally in the up position, and you will need to press it inwards to return the device to its original position.

Why Is My Rheem Tankless Water Heater Not Working?

The following are the most typical reasons why your Rheem tankless water heater is not functioning:

  • Tripped circuit breakers and the reset button due to system overload
  • Blown fuses and the reset button. Thermostat and thermistors that are not working properly
  • Vents and air intake pipelines that are clogged
  • The accumulation of sediment and lime
  • Valves that have been closed or partially closed
  • There is no gas supply
  • Wire connections that are not secure
  • High limit switch that is not working properly, short hot water draws, and other issues.


A reset of your Rheem tankless water heater may be necessary if it has been overloaded, has shown an error code, or the reset button is constantly tripping. If the problem remains even after you’ve reset the water heater, contact the manufacturer or a professional water heater specialist for assistance.

How to Reset a Water Heater (and Why You’d Need to)

Please keep in mind that this content may contain affiliate links. This means that, at no additional cost to you, we may gain a small profit on purchases made via our links. Unfortunately, these are quite frequent issues that many homeowners or apartment residents may encounter at some point in their lives, particularly when it comes to electric water heaters and water heater reset switches.

What To Check When You’re Having Hot Water Problems

The first thing you should look for is the water heater’s reset switch, which is normally a red button on the top thermostat of an electric water heater (or on the upper thermostat of a gas water heater) (you will need to remove the small panel to access it). If the button is illuminated, it indicates that the switch has been triggered and must be reset. Pushing the red button on the electric water heater reset button will reset the water heater.

On some water heaters, a lower thermostat reset button may also be located on the unit. If this is the case, press the reset button as well. If you press one of these buttons and the water heater trips instantly and won’t reset, you may have a problem with one of the components in the water heater.

What’s the Problem? Why Does the Switch Keep Tripping?

One of the most common reasons for the reset switch to trip is because the water heater is allowing the water to become too hot while running. Typically, this is an indicator of an incorrectly functioning thermostat in either the top or lower heating element.

Upper and Lower Heating Elements – How an Electric Water Heater Works

The operation of a water heater is rather straightforward. The water in the pressure tank fills from the bottom up, and it also warms from the bottom up, as shown in the diagram. Fresh water is pumped into the tank from the bottom, where it is heated by the lower heating element. As the water fills the container to the brim, the higher heating element ensures that the water remains hot. Each segment is equipped with a separate heating element and thermostat. These thermostats regulate the temperature of the water heater’s heating components.

  • The thermostats are activated in order to reheat the water.
  • If the lower heating element or thermostat fails, the water will not heat up at the bottom of the boiler.
  • Even if the higher heating element or thermostat fails, you will still have hot water for a short period of time, but you will quickly consume up that hot water before the heated water from the bottom reaches the top.
  • the button that resets everything
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What is the High-limit Switch?

The high-limit thermostat should be set at a temperature that provides you with good, hot water, but not boiling water that can burn or scald you if you are not careful. The temperature of your tap water should never be higher than that of boiling water. The temperature of the water should never rise over the predetermined setting once you’ve set the thermostat. If this occurs, the high-limit switch will trip, resulting in the higher heating element being turned off completely.

Other Reasons for a Hot Water Heater Reset Button to Trip

Thermostats aren’t the only parts on an electric water heater that may wear out and cause the unit to trip the reset button. This is especially true if you find yourself having to reset the water heater on a regular basis or running out of hot water regularly.

  • The high-limit switch is malfunctioning. If the high-limit switch begins to fail, causing the water to get too hot, the switch will trip. The wiring is a little sloppy. A loose wire in the heating element can generate enough heat to trip the high-limit switch
  • This is known as thermal overload. In the heating element, you have a short circuit. If this occurs, the thermostat may continue to function properly
  • But, the short may continue to heat the water over the appropriate temperature, triggering the high-limit switch. Finally, it is possible that the problem is not with the water heater at all, but with the way the power is set up in your home.

If your circuit breaker trips and has to be reset, the water heater will be unable to operate since it will not get energy. if your water heater continues tripping the circuit breaker, you should call a professional to inspect the water heater and the circuit breakers itself to ensure that there are no other electrical appliances sharing the same breaker as the water heater.

Where is the reset button on a Rheem water heater?

Remove the panel and the insulation from beneath it after turning off the electricity. Then hit the redreset button on your keyboard. If it clicks, you have successfully reset it. The thermostat’s button is located at the top of the unit. Then, flip the gas valve switch on the water heater to the “OFF” position, wait a few seconds, then flip the switch back to the “ON” position to restart the system.

One can also wonder where the reset button on a Rheem furnace is located. Learn how to use the Reset Button on a Rheem air conditioner to restart it after a power outage.

  1. Make it 80 degrees Fahrenheit in your home by raising the thermostat. Locate the red rubber boot that covers the rest button on the rear of the air conditioner’s housing and remove it. Once you have pressed the reset button with your finger, press it again.

Also, I’d want to know where the reset button is on the water heater. The reset button for the water heater is the red button that is situated on the water heater itself (just above the thermostat). Some water heaters may have two reset buttons, one for each of the two thermostats on the unit. It may be necessary to remove the metal plate covering the thermostat, which is held in place by screws, in order to gain access to the reset button. What causes the reset button on a water heater to trip and need to be reset?

Other common reasons are as follows: Heating element that has been shorted—It is possible that the thermostat is functioning properly but that it is turning off the heating element.

Why my Water Heater Reset Button keeps Tripping and What to Do?

What is causing the ECO reset button on my Rheem electric water heater to trip over and over again? Energy Cut Off (ECO) and High Limit Control (HLC) are two terms used to refer to the red reset button that may be located on the thermostat of the heating element. It is intended to serve as a safety precaution. When the water temperature is too high, the switch is meant to turn off the energy to the heating elements (and hence prevent further water heating) of the electric water heater and prevent further water heating (150 F – 180 F).

  1. When the ECO reset button malfunctions, it is simple to reset it; nevertheless, it is advised that you explore the cause of the malfunction and how frequently it occurs.
  2. During normal functioning, the contacts below the reset button enable current to flow from one terminal to another, and this may be verified with a voltmeter by pressing the button.
  3. It is in such a circumstance that the voltmeter will not register any current flowing between the terminals and to the heating components.
  4. Note: It will be assumed that the wiring and electrical panel with breakers were completed correctly and in accordance with local codes – if anything appears strange, have an electrician verify the right size of the wire and breakers before proceeding.

Why the reset button keeps tripping

One of the most common causes for the reset button to trip is when the thermostat has failed and been stuck in the ON position, causing one of the heating components to continuously generate heat by heating water.

As a result, when the water temperature reaches the high limit temperature, the reset button is activated. The problem can be resolved by replacing the defective thermostat.

Loose wire connections

In addition to generating heat, scorched wires, melting, and smoke; loose wire connections can also interfere with the thermostat and cause it to trip. A loose wire or part with a loose wire must be replaced, and any other associated connections must be checked and tightened as well.

Inaccurate temperature reading

Additionally, the reset button is activated when the thermostat does not correctly read the water temperature, particularly if the thermostat is exposed after the insulation and cover have been removed.

Heat element shorted to ground

ECO trips when the heating element is shorted to ground level, resulting in continual water heating as a result of this. Disconnect the wires and do a continuity check to determine the source of the problem. If the terminal displays 0.0, this indicates that an element has been shorted and must be replaced.

Other reasons

  • When there are frequent and brief hot water withdrawals from the tank, the ECO circuit might trip as well. Wet conditions and leaks can produce corrosion on the thermostat, which can result in an incorrect temperature reading being displayed. Another possible cause of this issue is a defective high limit switch.


Maintaining your electric water heater on a regular basis will help to prevent or reduce the number of ECO reset tripping occurrences. Make sure there is no leaking and that the thermostat is installed correctly – flash and firmly mounted against the heater’s wall with all wires tightly screwed in and insulation in place.

  1. The Water Heater Reset Button Keeps Triggering
  2. How to Reset the Water Heater

How to Reset A Rheem Tankless Water Heater

In the event that your heating or air conditioning system requires repair or replacement, we can link you with a dependable and cost-effective specialist in your region. If you already have a Rheem tankless water heater, you shouldn’t have to be concerned about any problems in the foreseeable future. Nonetheless, Rheem tankless water heaters come with a service error code chart that you may use to rapidly identify any problems. You may learn about the symptoms, causes, and even the procedures that need to be taken in order to remedy the most common difficulties that occur with Rheem on-demand heating and cooling devices.

What’s the best way to describe Rheem tankless water heaters?

All Rheem tankless water heaters, whether they are condensing or non-condensing types, are controlled by a computer-based controller. The computer board not only controls the heating process, but it also alters the parameters, which may be quite useful when dealing with issues. The fact that Rheem tankless water heaters are equipped with an electronic control board and advanced technology, as well as a remote controller (which is optional) and a control panel, should be highlighted. It is for this reason that diagnostics are more easier to create and to fix.

Furthermore, if you grasp the meaning of the code, troubleshooting should be much easier.

What’s the best way to reset a Rheem tankless water heater?

A qualified installer/plumber should be hired to install your Rheem tankless water heater in the best possible way. Once the issue number is displayed on the screen, you should take a few moments before contacting customer assistance. Rather to resetting the system, it is preferable to do so to determine whether expert assistance is still required. Here’s how to do it properly:

  • The first step is to switch off the hot water faucet. Toss the remote control into your pocket and turn it off as well
  • It is now necessary to wait. In most circumstances, 5 minutes or less should be sufficient
  • Nonetheless, Continue with the process of turning on the tankless water heater. Open the hot water faucet and have a look at what’s going on

If you are getting no results at all and the error code is still there, you may try the following solution:

  • It is necessary to turn off the hot water tap once again. Don’t forget to switch off the remote as well
  • Then look up the error code guideline (which you can readily obtain online) to figure out where the problem is coming from. If you are unable to locate the code in the instruction manual, it is necessary to contact a professional technician
  • Otherwise,

The Rheem tankless error codes will, more often than not, be sufficient for diagnosing and, in some cases, resolving the problem. It is also conceivable that you will not be able to locate the code in the guideline or that you will be unable to resolve the problem on your own. If this is the situation for you, you should seek the assistance of a professional plumber.

What to do when calling the manufacturer?

You’ll need the following items ready and within reach if you’re determined to contact the manufacturer:

  • The date on which your unit was first installed
  • Model and serial number of the vehicle
  • Information about the services, as well as the dates they are available
  • Please supply as many specifics as you are able.

One last piece of advice

The majority of the time, just shutting off the hot water supply will clear any error codes that have occurred. It is also required to turn off and on the controller (if applicable) once you have completed the procedure. It’s possible that you’ll have to isolate and restore electricity as well. In the event that the controllers are not installed, it is required to turn off the electricity to the water heater, therefore removing the error code. We are confident in our ability to link you with a reputable service in your region that can repair, replace, or maintain your heating and air conditioning systems.

How to Troubleshoot a Rheem Water Heater

Rheem is well-known for manufacturing high-quality water heaters for both residential and commercial use. They are available in a variety of sizes and capacities, and they are intended to supply hot water rapidly while also being extremely energy efficient. Rheem water heaters are built to last for many years in the most demanding of environments. When difficulties do emerge, it is beneficial to do some easy troubleshooting methods before contacting a certified repair person, which can save you both time and money in the long run.

Not enough or no hot water

Check the amount of water that is being used in your house. If the water heater’s capacity has been surpassed, it is necessary to wait for the water heater to reach full capacity again.

Step 2

Check that the water heater’s power supply is working properly. See whether any fuses have blown or if any circuit breakers have been activated. Change the fuse or reset the circuit breaker. If you’re using a disconnect switch, be sure that it’s in the on position.

Step 3

If the water heater is a gas heater, make sure that any cutoff valves in the gas line are in the “on” position and that the water heater is getting fuel. A skilled service professional should be called in to address any other gas water heater issues that may arise.

Step 4

Check the thermostat on the water heater to ensure that it is properly adjusted, and make any necessary adjustments.

Step 5

Check to see that all of the faucets in the plumbing system are in excellent working order and that none of them are leaking or closed.

Other problems

If the water heater is making a rumbling noise, it is necessary to remove and clean the heating components. This is due to the mineral scale that accumulates on the elements over time.

Step 2

If the relief valve produces a popping sound or drains water, call a certified plumber for assistance. Due to high pressure in the plumbing system, this is occurring.

Step 3

If the relief valve produces a popping sound or drains water, call a competent plumber for assistance.

Due to high pressure in the plumbing system, this is occurring.

How to Reset a Water Heater

Being without a functional hot water heater throughout the winter is quite painful. What should you do if your hot water heater is not functioning properly? Often, rebooting the system is all that is required to solve the problem. Depending on the type of water heater you have, you may choose from one of the following approaches to resolve your issue (gas, electric, or eventankless).

How to Reset an Electric Water Heater

The switch was tripped, which caused the problem, and it only requires a reset to correct it. If you do not know how to reset a water heater, it is a very simple procedure to learn. All that is required is a little know-how; no special skills are required. The reset button should be the first thing you search for!

Where Is the Water Heater Reset Button?

How well do you know the location of your water heater (attic, garage, basement)? Having identified the water heater, look for a reset button on the higher thermostat, which is normally placed on the back of the unit. If it isn’t visible, it is most likely located someplace in the lower portion of the water heater. Some devices have a button at each position, whereas others do not. If you want further assistance, watch this informativeHomeowner Repair video.

See also:  Why Won'T My Water Heater Drain

Reset Button on Water Heater Doesn’t Click

So, what should you do if the water heater’s reset button does not function properly? It’s possible that your thermostat is malfunctioning. If the hot water heater continues tripping the reset button, the high limit switch may be the source of the problem. What’s going on is that the thermostat isn’t correctly controlling the temperature. When a defective thermostat enables the temperature to rise to an unsafe level, the high limit switch is activated. Obviously, you don’t want your child to wash his or her hands in hot water, thus this function is essential.

It’s also conceivable that you have a grounded element in your system, which is causing the water to boil up.

Other Causes of the Issue

A malfunctioning thermostat is the most prevalent source of this problem, but it is not the only one. It’s conceivable that your wiring is faulty or has been corrupted in some other manner. It’s also possible that you have a short in one or both of the heating components. Finally, but certainly not least, it’s possible that you’re experiencing electrical difficulties with your home as a whole, and that the problem isn’t limited to the water heater.

How to Reset a Gas Water Heater

Relight the water heater pilot, and on newer types, there is a thermal switch that may be used to reset the water heater.

How Long for Hot Water Heater to Heat After Reset?

It is necessary to wait for hot water once you have reset the system (unless you have an on-demand water heater), but how long should you wait? It varies depending on the size of the tank, but with any unit, you should be able to get into a hot shower in 30-40 minutes with gas water heaters and 60-90 minutes with electric water heaters, depending on the size of the tank.

How to Reset Tankless Water Heater

Thermal safety reset capabilities are also included in on-demand systems.

You can almost certainly count on having to remove the cover of your tankless water heater in order to have access to it if you need to reset it. Because each manufacturer will have their unique set of instructions, we recommend that you get out your owner’s manual to handle this issue.

Turn to the Plumbing Experts

Thank you for taking the time to visit us here at Please do not hesitate to contact us if you have any more questions regarding your project or related items. Remember, we carry only the most reputable brands in the industry, like Bradford White, Takagi, Stiebel Eltron, and others. Purchase water heater components and accessories at a discount from many sources. Resources that are related to this topic include: How to Light a Hot Water Heater (with Pictures) How to Turn Off a Water Heater (with Pictures) Instructions on How to Drain a Water Heater Using a Water Heater for the First Time How to Increase the Temperature of a Water Heater Is there a recommended temperature for the water heater?

Find product information, documents, videos, and installation assistance for the Rheem XE50T12EC45U0

PLATINUM AWARD FOR PERFORMANCE Electric water heaters with high efficiency are designed to have a longer life span, higher performance, and reduced running costs. Efficiency

  • .92-.93 UEF – United States
  • .96 EF – Canada The design of the isolated tank lowers conductive heat loss. On versions equipped with the PlusOneWater Management System, dual 3800 or 5500 watt stainless steel heating elements are used. On 50-gallon tall and 40-gallon medium models without the PlusOneWater Management System, there are two 4500-watt copper heating elements
  • On Canadian models, there is a 56- or 72-watt loss.


  • FHR: 54 – 68 gallons, depending on the gallon size of the tank
  • Recovery: 21-25 GPH at 90 degrees Fahrenheit**


  • Diagnostics that are simple and easy to understand
  • It has the ability to control numerous operating models. Temperature control through a digital thermostat
  • Protection against leaks with an audible alert

Increased Life Expectancy

  • Anode rod of superior quality provides long-lasting tank protection.

Cleaning on Your Own

  • Increased performance while also lowering operational costs
  • Many electric utility incentive schemes are met by this product. For ease of installation, the electric junction box is situated above the heating components. During times of high temperature, the over-temperature safeguard shuts off the computer.
  • Drain valve made of durable brass
  • It has a temperature and pressure relief valve built in. Compliance with low lead standards

12-year limited warranty on tank and components, 3-year full in-home labor guarantee, and 1-year full in-home labor warranty for Canadian models*. 12-year limited warranty on tank and parts. For detailed details, please refer to the written guarantee.

Water Heater Technical Bulletins – Rheem Manufacturing Company

The number 1201 is for anode rods for cathodic protection. ABSTRACT: This technical bulletin describes how an anode rod protects the innards of a water heater. 1201 Technical Bulletin Also see doc1219 for further information. Hot and cold water mixtures are represented by the number 1203. “When you take a shower, do you know how much hot water is in it and how much cold water is in it?” says the 1203 Technical BulletinABSTRACT: “This newsletter will demonstrate it to you.” The Sizing of a Residential Water Heater (ISO 1204) 1204 Technical BulletinABSTRACT: “This bulletin explains “”peak hour demand”” and demonstrates how to determine the size of a water heater for a household of four.” 1205 – The Safety of Water Heaters Some general safety measures for both gas and electric water heaters are discussed in detail in Technical Bulletin 1205.

1207 Instructions on How to Read Rheem/Ruud Serial Numbers Learn How to Read Rheem/Ruud Serial NumbersABSTRACT: Learn how to locate and read the serial numbers for Rheem/Ruud products.

1210 — The Chemistry of Water 1210 Technical BulletinABSTRACT: This bulletin describes the hostile effects of water within a water heater and how to avoid them.

1211 – Draw Test and Flow Rates – Flow Rates and Draw Test 1211 Technical BulletinABSTRACT: A draw test will determine whether or not the heater is functioning properly.

Abbreviated summary of 1212 Technical Bulletin: “Basic computations for energy costs, gallons per hour recovery, and electrical formulae that are applicable to water heaters.” 1213 — Same-Day or Next-Day Delivery 1213 Technical BulletinABSTRACT: First Hour Delivery (also known as first hour rating) is a word used to indicate the water heater’s capacity to perform in the first hour of operation after installation.

  1. The 1215th lesson is about how to read an Energy Guide label.
  2. Read the label and conduct some comparison shopping with these tips.
  3. A brief explanation of the concept of energy factor, how it is calculated, and how to use the EF while doing comparison shopping are provided in this technical bulletin.
  4. The reason for this is explained in this message.

1218 Technical Bulletin Relief Valves for High Temperature and High Pressure (1220) The following is an excerpt from Technical Bulletin 1220: “Temperature and Pressure Relief Valves, often known as T P valves, are emergency safety limit devices that prevent or relieve overheated water and pressure.” Water Hammer (number 1222) 1222 Technical BulletinAbstract: Water Hammer is a loud pounding noise that is produced when a hot or cold water valve is shut off fast, like in the example above.

  • 1224 – Private Wells for the Purification of Drinking Water 1224 Technical BulletinABSTRACT: Approximately 23 million individuals in the United States acquire their drinking water from their own private drinking water sources, according to the Environmental Protection Agency.
  • 1225) ABSTRACT: Residential hot water return circulating systems are systems that circulate hot water via copper pipe to ensure that hot water is practically immediate at the point of use when the water is turned on.
  • The following is an abstract of the 1228 Technical Bulletin: You may have observed mineral deposits on your cooking plates or rings of insoluble soap scum in your bathtub and faucet fittings on occasion.
  • 1230 Technical BulletinABSTRACT: A water heater’s projected yearly operating costs can be calculated using one of the following methods.
  • Abstract: There are two types of manifold installation methods available: series and parallel.
  • 1301 – Electric Water Heater Upkeep and Repairs 1301 Technical BulletinAbstract: Routine maintenance and periodic inspections will help you get the most out of your water heater by extending its life.
  • Failures of Electric Heating Element (Code 1308).

Residential Electric Recovery Rates (1309 – Residential Electric Recovery Rates) Abstract: Recovery rates in gallons per hour for electric water heaters are discussed in detail in Technical Bulletin 1309.

In addition, mathematical formulae are included.

According to the Residential Electric Use and Care Manual AP 90291313 – How to Check Residential Electric Thermostats, this diagram shows how to check a thermostat in a residential electric system.

In order to do this test, you will need a multimeter that can read voltage levels.

This control has the capability of monitoring all parts of the water heater’s sequence of operations and providing fault code help in the case of a mechanical breakdown of the water heater.

1326 Technical BulletinABSTRACT: The Super Sentinel household electric water heater’s modes of operation are detailed in this document.

HPWH Gen3 Troubleshooting (1329 HPWH Gen3) Problem-solving procedures for the 1329 HPWH Gen 3 hybrid (heat pump water heater) that was built after September 2015.

1400 Res. Standing Pilot Gas

Corrosive Atmospheres (ISO 1403: Corrosive Atmospheres) Abbreviation for Technical Bulletin 1403: Corrosive atmospheres can be created by a variety of substances that can be present in a house or workplace. 1404 – Effects of High Altitude on the Performance of Gas-Fueled Water Heaters Abstract: The amount of fuel necessary for a clean burn at sea level is not the same amount of fuel required when a heater is placed in a high altitude application, as described in Technical Bulletin 1404. 1406 — Gas water heaters that make a lot of noise ABSTRACT: “This technical bulletin discusses the reasons of rumbling, hammering, and sizzling noises in a gas water heater.

  1. In addition, mathematical formulae are included.
  2. 1409 Technical Bulletin According to this notice, the impact on a gas-fired water heater can be devastating.
  3. 1411 – Failure of Attic Ventilation and Pilot System “Poor attic ventilation can result in extreme heat and attic temperatures in the summer, which can cause the pilot to go out on standing pilot water heaters,” according to the 1411 Technical Bulletin.
  4. 1414 – Low NOx emissions Text of the 1414 Technical BulletinABSTRACT: Rheem is employing a variety of combustion methods to limit the amount of Nitrogen Oxides emitted into the environment (NOx).

1422 – Allowable Leakage of Gas Valves – ANSI Standard 1422 Technical BulletinABSTRACT: Components that are shipped with a Rheem/Ruud gas water heater are considered to be a part of the water heater system and are subject to the certification requirements of the Canadian Standards Association (CSA) and the American National Standards Institute (ANSI) Standards.

Repairs on 1438 ULN 7598 Gallon Parts and Labor A description of how to replace the Hot Surface Igniter, pressure switch, or blower motor on a residential 7598 gallon ULN is contained in Technical Bulletin 1438.

Technical Bulletin No.

ABSTRACT: Applications of Space Heating (ISO 1498) “This certificate applies to Rheem, Ruud, and Richmond brand water heaters,” according to the 1498 Technical Bulletin’s abstract.

Manufacturing Air 1500 – Combustion Air – Manufactured Home Direct Vent Water Heaters Bulletin de l’Informatique Technique REPORT: The direct vent water heaters manufactured by Rheem Manufacturing Company are intended for use in manufactured housing and must meet the requirements of UL Standard 307, Gas-Fired Heating Appliances for Manufactured Homes and Recreational Vehicles, as well as other applicable codes and standards.

1601 – Hot Surface Ignition PowerVent 1601 Technical BulletinABSTRACT: This technical bulletin describes the electronic control module and the sequence of operations for the hot surface ignition power vent.

1629 – Replacement of the Pressure Switch Description of 1629 Technical Bulletin: Pressure Switch Replacement for ESII PowerVent; from October 2010 to the present 1658 – Repositioning the Igniter Rod 1658ABSTRACT: When the main burner is turned on, the pilot flame burns out under certain conditions.

  • As soon as the flame sensation is gone, the control will very instantly go out, and the unit will enter retry mode, with the possibility of soft and harsh lockouts.
  • 1707 – AdvantagePlus Venting – Illustrations of the Product “Many failed igniters, returned under warranty, have failed as a result of exhaust gas recirculation,” according to the 1707 Technical Bulletin.
  • 1709 – Adjustment of the Cast Iron Burner Technical Bulletin No.
  • Instructions for the Installation of Diffuser Tubes (1710) “Depending on the precise model, one or two Diffuser Tubes have been included with your water heater,” according to the 1710 Technical Bulletin.
  • 1723 A01 – Maximum Ignition Attempts is the most common start-up error code, and it is explained in detail below.
  • 1725 – Water is turned off due to low water levels.
  • 1725 The following is an explanation of how to install a Low Water Cut Off switch on a commercial gas water heater: Kit for replacing the GHE Combustion Assembly (1728).

Condensate Collector Troubleshooting on the SpiderfireABSTRACT: The condensate collector is a specific pan that is positioned at the bottom of the Spiderfire.

Spiderfire Expanded Vent Tables (Serial No.

Problems with the AdvantagePlus ignition system (1734).

1734 SUMMARY: Ignition problems with the AdvantagePlus are commonly accompanied with error number F09.

1738 ULN 7598 Gallon Commercial Stainless Steel ULN Technical Bulletin No.

ABSTRACT: A06 is an error code that indicates that a vent has been blocked in the Spiderfire 1739 computer system.

1741 Technical Bulletin for the AdvantagePlus F13 Fault Code 1741.

If it reaches an overheat condition (a temperature that has been specified in that switch), it will turn off the blower.

It generates a fault code of F13.

1742 Rheem-Ruud is glad to inform that most non-Energy Star models will allow for longer vent runs as well, as a result of the recent introduction of Energy Star SPIDER fire® and the introduction of new longer comparable vent lengths.

The blower motor fault code and the venting fault code may now be distinguished as of February 2014, according to the manufacturer.

1797 – Triton Leak Testing 1797ABSTRACT: Fuse Blocks that have been burned since 1800 Fired fuse blocks from a heavy duty commercial electric are caused by electrical heat energy, which is referred to as ampacity in some circles.

1806 – ELD/ELDS Clearance to Combustibles (ELD/ELDS Clearance to Combustibles) Technical Bulletin No.

In 1807, the commercial electric heavy duty models were converted to single phase operation.

1807 INTRODUCTION: “Beginning in May 2005, any E, ES and ME models (heavy duty electric, 10 gallon electric boosters, small volume ASME, and Eclipse) manufactured after that date will be capable of being changed to single phase in the field.” 1707- Unbalanced Three Phase Amp Load 1707 Technical Bulletin 1707 Technical Bulletin The electrical connections depicted in this paper are recommended by Rheem for an unbalanced 3-phase 208v 12 Kw system, according to the manufacturer.

ELD The 1809 Technical Bulletin is titled “Low Water Cut Off.” The following is an explanation of how to install a Low Water Cut Off for an electric commercial water heater.

TKTB TKTBABSTRACT: TKTBABSTRACT: TKTB Winterization Tech Bulletin for Tankless Water Heaters – 11001 Tankless Winterization Tech Bulletin for Tankless Water Heaters – 11001ABSTRACT: Tankless water heaters can be damaged by freezing temperatures.

It is possible that damage to the item will not be covered by the warranty if safeguards are not taken.

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