Search Error Codes

The E736 error on your Navien boiler indicates a failure in the return water temperature thermistor. This sensor measure...

The E046 code on your Navien unit means the outlet thermistor, a temperature sensor located on the hot water outlet pipe...

The P2 error code on your Mitsubishi HVAC system indicates a problem with the indoor pipe thermistor. This component mea...

The Rheem A031 error code indicates that there's an open or short circuit in the inlet thermistor, which is responsible ...

The A041 error code on your Rheem HVAC system indicates a problem with the outlet thermistor. This component is responsi...

The Noritz 31 error code indicates a failure in the inlet thermistor, a crucial temperature sensor in your water heater....

Error 32 on your Noritz water heater indicates a failure in the outlet thermistor, a crucial temperature sensor. This se...

The error code 33 on your Noritz water heater indicates a failure in the heat exchanger thermistor. This component measu...

The Daikin C4 error code indicates a fault with the heat exchanger thermistor. This component measures the temperature o...

The U3 error code on your Mitsubishi HVAC system indicates a problem with the discharge thermistor. This component measu...

The U4 error code on your Mitsubishi HVAC system indicates a short or open circuit in the outdoor thermistor. The thermi...

The Daikin C9 error indicates a problem with the suction air thermistor, a temperature sensor that helps regulate your H...

The Mitsubishi 5 error, also known as an 'Outdoor Thermistor Open/Short', indicates that your system has detected an iss...

The E031 error on your Navien boiler indicates an open or short circuit in the inlet thermistor. This component measures...

The E047 error on your Navien tankless water heater indicates an open or short circuit in the DHW (Domestic Hot Water) t...

The E740 error on your Navien boiler means the control board has detected a problem with the thermistor that monitors th...

The E786 error on your Navien boiler indicates a failure in the header thermistor, a sensor that monitors the temperatur...

Rinnai's error code 31, Inlet Thermistor Failure, indicates a problem with the sensor that measures the temperature of t...

The Rinnai 32 error code signifies that the outlet thermistor, a temperature-sensing component, has failed. This part is...

Error code 33 on your Rinnai water heater indicates a problem with the heat exchanger thermistor. This sensor monitors t...

The Rinnai 34 error code indicates a problem with the combustion air thermistor, a safety component that monitors the te...

The E1 error code on your A.O. Smith tankless water heater indicates a problem with one of its thermistors. Thermistors ...

The F1 error code on your Bradford White tankless water heater indicates a problem with one of the temperature sensors. ...

The F10 error code on your Bradford White tankless water heater indicates a short circuit in one of the thermistors. A t...

The F11 error code on your Bradford White tankless water heater indicates that the unit's control board isn't receiving ...

The Fujitsu E4:00 error code indicates an open circuit in the indoor coil temperature sensor. This sensor, also called a...

The E1 error code on your Richmond water heater indicates a problem with one of the temperature sensors. These sensors a...

The 'E2' error code on your Samsung mini-split indicates a problem with the room temperature sensor inside the indoor un...

The 'E2' error code on your Honeywell HVAC system indicates a problem with one of its temperature sensors. These sensors...

Rinnai error code 18 indicates a fault with the exhaust thermistor, which is a temperature-sensitive resistor that monit...

The Fujitsu error code E2:00 indicates that the indoor unit's main control board isn't receiving a signal from the room ...