Search Error Codes

The E205 error on your Navien boiler indicates a malfunction in the water flow sensor. This sensor is responsible for mo...

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

Error code 16 on your Rinnai water heater indicates that the temperature has exceeded the safe operating range. This cou...

Error code 59 on your Noritz water heater indicates an overheating condition. This could be due to a faulty temperature ...

The A008 error code on your Rheem HVAC system indicates that the exhaust temperature has exceeded the safe limit. This c...

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

The Noritz 16 error code indicates that the water temperature has exceeded the set limit. This could be due to a faulty ...

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

The A043 error code on your Rheem HVAC system indicates that the water level in the system is either too high or too low...

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

The Daikin A3 error code indicates a problem with the drain system. Specifically, the unit's sensors have detected that ...

Error code 43 on your Noritz water heater indicates a problem with the water level or neutralizer. The neutralizer is a ...

The Daikin H6 error code indicates a problem with the system's position sensor, which is responsible for tracking the in...

The F0 error code on your Gree HVAC system indicates that the blower temperature sensor is not functioning correctly. Th...

The A093 error code on your Rheem HVAC system indicates a problem with the data being read from the printed circuit boar...

The F3 error code on your Gree HVAC system indicates a failure in the outdoor ambient temperature sensor. This sensor is...

Mitsubishi's error code 7 indicates that the outdoor unit has either frozen or overheated. This is a safety feature desi...

The P4 error code on your Mitsubishi HVAC system indicates a fault with the drain sensor. This sensor is responsible for...

The P6 error code on your Mitsubishi HVAC system indicates that the coil freeze/overheat protection feature has been act...

The A004 error on your Rheem furnace indicates a false flame detection issue. This means the system's flame sensor has d...

The E004 error on your Navien boiler indicates a false flame detection. This means the boiler's sensors have detected an...

The Carrier error code 24, or a blinking LED pattern of 2 long flashes followed by 4 short flashes, indicates a problem ...

The Carrier error code 32, or a blinking LED pattern indicating 'Low Flame Sense,' means the furnace's control board isn...

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

The Daikin U4 error code indicates a communication issue between your indoor and outdoor HVAC units. This could be due t...

The Goodman 4 error, also known as an open high limit switch, indicates that your HVAC system has detected an issue with...

Error code 5 on your Goodman furnace indicates that the flame sensor is detecting a flame when the gas valve is supposed...

The Goodman 7 error code indicates that your furnace's flame sensor isn't detecting a strong enough flame from the burne...

The E8 error on your Gree air conditioner indicates that the anti-high temperature protection has been triggered. This f...

The F1 error code on your Gree HVAC system indicates a failure in the indoor ambient temperature sensor. This sensor is ...

The F2 error code on your Gree HVAC system indicates a failure in the indoor coil sensor. This sensor is responsible for...

The F4 error code on your Gree HVAC system indicates a failure in the outdoor coil temperature sensor. This sensor is cr...

The F5 error on your Gree air conditioner indicates a failure in the compressor discharge sensor. This sensor measures t...

Mitsubishi's error code 6 indicates that your indoor unit's temperature has either dropped too low (freeze) or risen too...

The P1 error code on your Mitsubishi HVAC system indicates a problem with the intake sensor. This sensor measures the te...

The P8 error on your Mitsubishi HVAC system indicates that the pipe temperature has exceeded the safe operating range. T...

The U5 error code on your Mitsubishi HVAC system indicates that the condenser temperature is higher than normal. This co...

Error code E001 on a Navien unit means the ignition control module tried to light the burner but didn't detect a flame w...

The E016 error on your Navien boiler indicates that the water temperature has exceeded the safe limit. This could be due...

The E030 error on your Navien boiler indicates that the exhaust overheat sensor has detected temperatures exceeding the ...

The E352 error on your Navien boiler indicates an abnormality with the Aquastat Pressure Switch (APS) sensor. This senso...

The E353 error on your Navien boiler indicates that the Air Pressure Switch (APS) sensor is either open or shorted. This...

If you're seeing the E480 error code on your Navien boiler's digital display, it means there's a communication issue bet...

The E515 error on your Navien boiler indicates that the water flow rate is lower than normal. This could be due to a par...

The E517 error on your Navien boiler or water heater means the water flow switch did not close within 10 seconds after a...

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

The E784 error on your Navien boiler indicates a failure in the outdoor temperature sensor. This sensor is crucial for y...

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

The E407 error code on your Navien tankless water heater indicates a problem with the domestic hot water (DHW) outlet te...

The Rinnai 12 error code indicates that your water heater's flame has gone out, preventing it from heating water. This c...