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Troubleshooting AMX
Error Number
Error 078A
Error Code / System Message
Error Question
What does error 078A mean on a GE Optima XR200amx or XR220amx?
Short Answer
Error 078A: Thermal: There is no response from at least one thermal sensor.
Possible Causes
Subsystem/category: Thermal. Manual recovery/error class: INHIBIT.
Troubleshooting Steps
Allow cooling when appropriate, verify airflow, and run generator thermal/70C diagnostics. Check the board or sensor identified by the code.
Parts Areas to Check
For Related Models
Optima XR200amx, Optima XR220amx
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