Parameter storage device fault (control circuit board)

What does E.PE mean?

An EEPROM fault, causing the inverter output to stop due to an error in the parameter storage (EEPROM fault) on the control circuit board. This often results from an excessive number of parameter write operations, potentially corrupting essential configuration data. Persistent issues may require expert intervention.

• EEPROM chip on the control board has reached its maximum write cycle limit due to frequent parameter changes.
• Corrupt parameter data stored in the EEPROM due to power fluctuations during a write operation.
• Internal component degradation on the control circuit board affecting EEPROM read/write operations.
• Transient voltage spike or electromagnetic interference (EMI) during a parameter save action.

Click steps to track your progress.

1. 1

   Attempt to reset all parameters to factory default settings using Parameter Pr. 77 (Function Selection) set to '1' or '100'.

2. 2

   Record all current parameter settings manually before attempting a reset, if access to parameters is still possible.

3. 3

   Power cycle the inverter completely (remove main AC power) and reapply after 60 seconds to clear transient errors.

4. 4

   Visually inspect the control circuit board for any signs of physical damage, burn marks, or bulging capacitors.

5. 5

   If the fault persists after parameter reset, prepare for control circuit board replacement as the EEPROM is typically integrated.