Search Error Codes
Search across 21 brands and 300+ diagnostic codes
The E003 error on your Navien boiler indicates that the ignition system isn't functioning as it should. This could be du...
The Carrier error code 14, also known as an ignition lockout, means your furnace tried to ignite the burners multiple ti...
The Carrier 21 error code, also known as a gas heating lockout, signals that your furnace has tried to ignite the gas mu...
Noritz error code 72 indicates a problem with either the flame rod or gas valve in your water heater. The flame rod dete...
The A099 error on Rheem systems indicates a failure of the main control board (PCB). This board controls all system func...
The error code 1 on your Lennox HVAC system indicates that the ignition system has failed to ignite the burner. This cou...
Error code 90 on your Noritz water heater indicates a combustion abnormality. This could be due to improper gas supply, ...
The A001 error code on your Rheem HVAC system indicates that the ignition system isn't functioning correctly. This could...
The A003 error on your Rheem HVAC system indicates an abnormal ignition issue. This could mean that the system is having...
The Carrier error code 32, or a blinking LED pattern indicating 'Low Flame Sense,' means the furnace's control board isn...
Error code 34 on a Carrier furnace indicates an ignition or flame sensing issue. The control board isn't detecting a sta...
The Goodman 7 error code indicates that your furnace's flame sensor isn't detecting a strong enough flame from the burne...
The Flame Rollout Switch Open error code (5) on your Lennox heating system indicates that the switch designed to prevent...
Lennox error code 7, or ignition lockout, means your heating system has temporarily shut down to prevent damage. 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 E012 error on your Navien boiler indicates a flame loss issue. This could be due to a problem with the ignition syst...
The Noritz 11 error code indicates that your water heater's ignition system is not functioning properly. This could be d...
Error code 11 on your Rinnai water heater indicates a 'No Ignition' issue. This means the burner isn't firing up to heat...
The Rinnai 12 error code indicates that your water heater's flame has gone out, preventing it from heating water. This c...
The Rinnai 72 error code indicates a problem with the flame rod, a crucial safety component in your water heater. The fl...
The Honeywell E351 error code indicates a general equipment fault within your HVAC system. This is a broad error, meanin...
The E06 error code on your A.O. Smith water heater indicates that the unit's flammable vapor sensor has detected the pre...
The '5R' error code on your Amana furnace indicates an 'Ignition Lockout'. This means the furnace tried several times to...
The F13 error code on your Bradford White tankless water heater means the unit tried to light the burner but failed. Thi...
Error code 11 on your Richmond water heater means the unit tried to start but failed to light the burner. This usually h...
Error code 12, 'Flame Failure,' on your Richmond water heater means the unit tried to light the burner, but the flame wa...
The Ruud '11' error code signals that the furnace attempted to ignite the gas multiple times but failed. This usually me...
Error code 111 on your Takagi tankless water heater signifies an ignition failure. This means the unit tried to start th...
The Takagi 710 error code indicates a fault within the Printed Circuit Board (PCB), which is the main control board of y...
The Takagi error code 760 indicates a communication problem within the unit's electronic components. Essentially, the di...
The R3 error code on your York furnace indicates that the pressure switch is stuck in the open position. This switch is ...
The R7 error code on your York furnace indicates an 'Ignition Lockout'. This means the furnace attempted to ignite the b...
The '7R' error code on your Amana furnace indicates a low or unstable flame signal. This means the furnace control board...
The 9H error code on your Goodman furnace indicates a 'soft lockout.' This happens when the furnace attempts to ignite, ...
The F01 error code on your Goodman furnace indicates an 'Ignition Lockout'. This means the furnace attempted to light th...
Rinnai error code 55 indicates that the unit's flame sensor is detecting a flame when it shouldn't be. This can happen e...
Rheem error code 11 signals that your tankless water heater attempted to ignite the burner but failed. This means the un...