The error code 71 indicates a malfunction in the circuit board, specifically in the Gas Valve drive circuit or its grounding system. This issue may be caused by a faulty soldering connection on the Circuit Board. In most cases, when this error occurs, the recommended action is to replace the Circuit Board.
To clear this error code, you’ll need to perform a power cycle. First, disconnect the power supply to the water heater, then reconnect it after a brief pause. This should reset the system and clear the error code.
For further technical assistance call 866-766-7489 or use our Contractor Locator to find a local service representative.