Honeywell 33 troubleshooting answers
1 question with answers cited from the manufacturer manuals.
- 0Honeywell RM7800 Fault 33 after shutdown, what to check?
Fault 33 on a Honeywell RM7800 series relay module indicates a pre-ignition interlock issue, specifically that the proof-of-closure switch on the safety shutoff valves did not prove closed when required. This prevents th…