1) Close the manual gas shut off valve. 2) Turn off power to the unit, and then turn on again. 3) Wait 30 seconds, and…

Incorrect Dipswitch settings can cause a 031 error code, or a number of operational problems.

MAIN REMOTE CONTROL PROBLEM This error code only occurs when there is a miscommunication between the temperature remote controller and the water heater. 1) Check…

COMPUTER BOARD FAULT 1) Turn off the power supply. 2) Check all wire connections and make sure they are secure and free of burns or…

1) Turn off power supply. 2) Check that all wire connections are secure and free of burns. The flow adjustment valve is located behind the…

ABNORMAL FAN MOTOR 1) Turn off power supply. 2) Check fan motor wiring for any breakages, burn marks on the PC board, or moisture. If…

ABNORMAL GAS VALVES Driving circuit fault for the main or solenoid gas valves. 1) If the hot water is shut off, but flames are still…

Part of an Easy?Link system (510 (T?D2) only), the master unit signaled for an additional heater to activate and it did not. 1) Verify that…

1) Check that the wire connections are secure and free of burns or cuts. 2) Check that the clear plastic tube connecting the proportional gas…

MIXING THERMISTOR 1) Check that the wire connections are secure and free of burns or cuts. The mixing thermistor is embedded in the water outlet…