Rheem designs and builds its water heaters with exceptional quality, ensuring they will last many years. However, problems can still arise, requiring homeowners to master how to reset Rheem water heater units to kick-start the troubleshooting activity.
Although it sounds complicated, resetting a Rheem water heater is more straightforward than some homeowners think. The activity only requires a few hand tools and a basic understanding of how Rheem appliances work.
Continue reading to learn the detailed steps for resetting your water heater.
Table of Contents
Ways to Reset Rheem Water Heater
You have several options to restart a water heater from Rheem. Let us explore these techniques.
What to prepare
Resetting a Rheem water heater does not require any tool, except for a screwdriver or a hand tool to open the access panel and reach the reset button.
You might want to read the owner’s manual of your specific Rheem model to determine the reset button’s precise location.
Resetting a Rheem Water Heater Error Code
Rheem water heaters have some of the most advanced technologies today. They have sensors that detect system problems and display the information on the screen as error codes.
For example, Error Codes 1L and 00 describe continuous combustion for an hour, while Error Code 05 indicates imperfect combustion.
You can also check your Rheem water heater troubleshooting manual for the other Error Codes and their respective solutions.
After fixing the problem, the Error Code might still show on the display. So how do you reset code errors?
Pressing the POWER button will clear or reset the Error Code.
Why is My Rheem Hot Water Not Working?
Troubleshooting a Rheem water heater involves determining why it is not working. You might want to consider the following scenarios to zero in on the potential problem. Hopefully, the solution only requires you to press the reset button on Rheem water heater units.
- Water is cold – The water heater might be turned off or the circuit breaker at the electrical panel is in the off position. These situations might explain a Rheem water heater not turning on.
- Water is too hot – The thermostat is set to the highest setting; there could also be a faulty thermostat.
- Low water flow rate – A broken pressure regulator or a closed main water shutoff valve might be the culprit.
- Pilot light is off – Inadequate gas supply to the water heater or a faulty or closed gas shutoff valve
Why does my Rheem water heater reset button keep on tripping?
Several reasons can explain why a Rheem hot water heater reset button continuously trips.
- The water heater thermostat locks or stays in the ON position because of a failing thermostat. Thermostat failure can also produce inaccurate temperature readings, tripping the reset button.
- The Energy Cut Off (ECO) system trips due to loose electrical wiring connections, leading to excessive heat.
- A short circuit exists between the heating element and the ground, tripping the ECO.
- High-Limit Switch malfunction can also trip the Rheem water heater reset button.
- Frequent yet short hot water usage can trip the ECO.
How long must I wait after resetting before I get hot water?
Hot water is almost instantaneous after resetting a Rheem tankless water heater. It is a different story with storage tank units and their fuel source.
For example, a 30- to 40-minute waiting period is normal with gas-powered storage tank water heaters. Meanwhile, electric versions might need anywhere between 60 to 90 minutes to deliver hot water to the faucet.
Learning how to reset Rheem water heater units is a walk in the park. You only need to open the access panel, remove the insulating material, locate the red reset button, and press it until it pops a click.
The resetting process is nearly identical for all Rheem water heaters, except tankless electric models. You will also be surprised at how ridiculously easy it is to use this kind of Rheem water heater.
As the founder of Usawaterquality, I have been working to deliver quality advice on utilizing water components for numerous households. Here, we believe that water quality is the most critical part of health care, so the investment and attention for the water system will never go to waste.