Honeywell 14 troubleshooting answers
1 question with answers cited from the manufacturer manuals.
- 0Honeywell RM7800 Fault 14 during PREPURGE, what to check?
Fault 14 on a Honeywell RM7800 series relay module indicates that the high fire switch did not close within the allowed time during the PREPURGE cycle. This means the module commanded the firing-rate motor to high fire, …