Rheem · Tankless Water Heaters
The water heater has detected a problem and is showing an error code on the remote control display. Consult the Service Error Code Chart for specific details and solutions.
Click steps to track your progress.
Turn off all hot water faucets.
Turn off the water heater using the POWER ON/OFF button on the remote.
Wait approximately 5 minutes, then restart the water heater.
Turn on a hot water faucet and check the remote control display.
If the error code persists, make note of it and contact a qualified service technician.