An error code 61 indicates a Fan Motor abnormality. Please verify that the Fan Motor connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. The heater has certain RPM (rotations per minute) ranges it expects the fan to spin at during different…

An error code 42 indicates a Water Flow Sensor (Recirculation) abnormality. This error is triggered when the system cannot maintain stable recirculation mode. For further technical assistance call 866-766-7489 or use our Contractor Locator to find a local service representative.

An error code 35 indicates a Thermistor – Exhaust abnormality. Please verify that the Thermistor – Exhaust is securely connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. For further technical assistance call 866-766-7489 or use our Contractor Locator to find a…

An error code 33 indicates a Thermistor – Heat Exchanger Outlet abnormality. Please verify that the Thermistor – Heat Exchanger Outlet is securely connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. For further technical assistance call 866-766-7489 or use our Contractor…

An error code 32 indicates a Thermistor – Hot Water abnormality. Please verify that the Thermistor – Hot Water is securely connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. For further technical assistance call 866-766-7489 or use our Contractor Locator to…

An error code 31 indicates a Thermistor – Cold Water abnormality. Please verify that the Thermistor – Cold Water is securely connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. For further technical assistance call 866-766-7489 or use our Contractor Locator to…

An error code 30 indicates a Thermistor – Air abnormality. Please verify that the Thermistor – Air is securely connected to the Wire Harness, and that the Wire Harness is properly connected to the Circuit Board. For further technical assistance call 866-766-7489 or use our Contractor Locator to find a…

An error code 13 indicates a malfunction with the optional CO alarm device. Please follow these troubleshooting steps after ensuring proper ventilation at the installation site: For further technical assistance call 866-766-7489 or use our Contractor Locator to find a local service representative.