GE PANDA Service Manual page 92

Chapter 4: Troubleshooting
Troubleshooting Tables
4.4.5.1 Sys Fail 01 [FF xx xx xx]
Problems indicated with FLASH Memory - File System Error
Possible Causes
Incorrect software
loading
Defective Control
PCA
4.4.5.2 Sys Fail 02
Reported power from Power PCA does not match commanded power from Control PCA.
Possible Causes
Power PCA failure
Heater Connection
failure
Power PCA failure
4.4.5.3 Sys Fail 03
Memory error occurred.
Possible Causes
NVRAM failure
Control PCA failure
4.4.5.4 Sys Fail 04
Redundant stored variables do not match (Memory Redundancy Error).
Possible Causes
NVRAM corrupt
Control PCA failure
4-30
Step Troubleshooting Procedure
Reload software. Reprogram the main application
1.
flash.
2. Replace Control PCA
Step Troubleshooting Procedure
1. Run heat engine health check in Service Mode.
Check connections from the Control PCA to the
2. Power PCA and from the Power PCA to the heat
engine.
3. If problem persists, replace Power PCA.
Step Troubleshooting Procedure
Verify the cover of NVRAM chip on the Control PCA
1. is properly seated (NVRAM chip cover retains
NVRAM battery).
Reprogram the main application flash. Go into
2.
service mode and reset defaults.
3. If problem persists, replace Control PCA.
Step Troubleshooting Procedure
1. Reprogram the main application flash.
2. Replace Control PCA.
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