Input OC or SC
Monitored input open or short circuit
A monitored input line has an open-circuit or short-circuit fault.
What this code means
A monitored input line has an open-circuit or short-circuit fault.
Possible causes
- Open circuit in field wiring
- Short circuit in field wiring
- Missing or incorrect end-of-line device
Common symptoms
- Input OC or SC fault message
- General fault indication
Checks to make
- Identify the affected input
- Check field wiring for open or short circuit
- Confirm the correct end-of-line device is connected
Safety
- Fire alarm field wiring should be tested and repaired by competent personnel while impairment is managed under site procedures.
Model notes
OC means open circuit and SC means short circuit.