Honeywell Series 8 I/O - Ftapowfl; Dpadiafail; Rdbkrgdiagfl; Wdtdiagfail

13. Series 8 I/O Alarms and Failures
13.2. Reviewing IOM soft failures
286 Series 8 I/O User's Guide R500
Honeywell April 2017
181 FTAPOWFL
TC/RTD IOM is not able to power the FTAs.
Diagnostic check:
TC/RTD IOM is not able to power the FTAs.
Cause:
TC/RTD IOM is not able to power the FTAs.
Solution:
Replace the IOM. This soft failure is introduced in Series 8.
182 DPADIAFAIL
IOL Address Diag Failure
Diagnostic check:
IOL address diagnostic failure
Cause:
IOL address diagnostic failure
Solution:
Check IOM number at device index switch. Ensure correct
assignment. If not correct, reset to correct device index
number. Reset IOM.
183 RDBKRGDIAGFL
Readback Register Diagnostic Failure
Diagnostic check:
Readback register diagnostic failure
Cause:
Readback register diagnostic failure
Solution:
Internal hardware problem. Replace the IOM.
184 WDTDIAGFAIL
Watch Dog Timer Diagnostic Failure
Diagnostic check:
Watch Dog Timer diagnostic failure
Cause:
Watch Dog Timer diagnostic failure
Solution:
Replace the module.