A Rheem Tankless Water Heater

How to Reset A Rheem Tankless Water Heater

If you’re using a Rheem tankless water heater already, you shouldn’t worry much about any issues any time soon. However, Rheem tankless water heaters include a service error code chart that you may quickly check. You can find out about the symptoms, causes, and even the steps you have to take for fixing the most typical issues on Rheem on-demand units.

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

All Rheem tankless water heaters, no matter if they’re condensing or non-condensing models, use a computer board. The computer board controls the heating process, but also adjusts the parameters, helping you when dealing with problems.

We should highlight that Rheem tankless water heaters feature an electronic control board and sophisticated technology, but also remote controller (it’s optional) and control panel. It’s why the diagnostics are a lot easier to make and to solve. Should you ever have to deal with a problem, an error code will show on the LCD screen of the remote/user interface. And when you understand the meaning of the code, the troubleshooting should go smoother.

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

Ideally, you should have your Rheem tankless water heater installed by a licensed installer/plumber. Once the error code is shown on display, you should wait a bit until you call the service support. It’s better that you reset the whole system, to see if the professional help is necessary still or not.

Here how to do it right:

  • Begin with turning the hot water tap off
  • Take the remote control and turn it off as well
  • Now it’s time to wait. 5 minutes or so should be enough in most cases
  • Continue with turning the tankless water heater back on
  • Open the hot water faucet and see what’s happening.

When you have no results whatsoever, and the error code is still showing, you can try another solution:

  • You need to close the hot water tap once more. Don’t forget to turn the remote off as well
  • Go to the error code guideline (you can easily find it online) to find out where the problem is. If you cannot find the code in the instruction, it’s time to get in touch with a licensed technician.

More often than not, the Rheem tankless error codes will be enough for identifying and even solve the problem. It’s also possible that you don’t find the code in the guideline or that you cannot solve the issue on your own. If that’s the case for you, a professional plumber is the one to call.

What to do when calling the manufacturer?

If you’re determined to call the manufacturer, here’s what you need to have prepared within reach:

  • The date of installation of your unit
  • Model and serial number
  • Information about the services, dates included
  • As many details as you can provide.

One last piece of advice

Most of the time, error codes are easy to reset by simply turning off the hot water flow. It’s also necessary that you turn the controller (if that’s the case) off and on afterward. You may also have to isolate and restore power.

Should the controllers not be fitted, it’s necessary to turn the power off at the water heater, clearing the error code.

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