Honeywell Series 8 I/O - F3 Calfl; F4 Calfl; Openwire; Dovrcrnt

13. Series 8 I/O Alarms and Failures
13.2. Reviewing IOM soft failures
R500 Series 8 I/O User's Guide 285
April 2017 Honeywell
177 F3CALFL
TC/RTD FTA 3 calibration failure.
Diagnostic check:
Check FTA calibration
Cause:
TC/RTD FTA 3 calibration failure.
Solution:
Recalibrate the FTA. This soft failure is introduced in Series 8.
178 F4CALFL
TC/RTD FTA 4 calibration failure.
Diagnostic check:
Check FTA calibration
Cause:
TC/RTD FTA 4 calibration failure.
Solution:
Recalibrate the FTA. This soft failure is introduced in Series 8.
179 OPENWIRE
Open wire / sensor detected.
Diagnostic check:
Check the field wiring and IOTA connections.
Cause:
Open wire / sensor detected.
Solution:
Check the field wiring and IOTA connections.
180 DOVRCRNT
Digital Output channel detected a short circuit or over current situation.
Diagnostic check:
Check the field wiring and IOTA connections.
Cause:
Digital Output channel detected a short circuit or over current
situation.
Solution:
Check the field wiring and IOTA connections.