EC 12, or Error Code 12
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:
- Insufficient gas supply.
- Insufficient air supply.
- Debris on the flame sensor.
It is recommended that you contact a servicer to troubleshoot this error code.
Please visit http://support.noritz.com/servicereplocator.php to find a local service representative.