Technical Articles

FAQ - What does an error code 12 mean?

An error code 12 indicates a flame loss. This means that the unit is detecting a flame, but the flame is being extinguished during operation (weak flame). 

Common issues associated with a 12 error code include:

1) Insufficient gas supply
2) Insufficient air supply
3) Debris on the flame sensor

It is recommended that you contact a servicer to troubleshoot this error code.
Please visit to find a local service representative.

Applicable Models
  • Models: ALL MODELS
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