343

Possible Causes

• •Calibration Checksum Warning (Fault Code 2416) is active
• •EEPROM Write Failure Warning (Fault Code 353) is active
• •Utility Bus AC Metering Failure (Fault Code 1335) is active
• •Generator Bus AC Metering Failure (Fault Code 1335) is active
• •The hardware version is not compatible with the software version
• •The current value in RAM memory (to-be-written value) does not match its post-written value in EEPROM
• •Attempt to save a trim by using either InPower or the LCD display is not successful
• •The SYNC1320 master synchronizer fails to automatically save data on a periodic basis
• •Misoperation of relevant terminal blocks (TB10-6) on the SYNC1320 master synchronizer and related switches
• •Faulty cabling from the switches to the terminal blocks
• •Control switch operation is not OK

Suggested Actions

1. 1Identify which of the faults is active by observing the fault displayed on the control panel or observing the lamps on the SYNC1320 control board, or by using InPower
2. 2Take corrective steps for the active specific faults
3. 3Cycle power to the SYNC1320 master synchronizer
4. 4If the problem continues, replace the control board
5. 5Clear the fault by cycling power to the SYNC1320 master synchronizer
6. 6Clear the fault by resetting the processor via an InPower initial calibration
7. 7Verify if working in non-Auto mode is intentional
8. 8Check relevant terminal blocks (TB10-6) on the SYNC1320 master synchronizer and related switches for misoperation
9. 9Check cabling from the switches to the terminal blocks
10. 10Make sure the control switch operation is OK

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