InverterFR-F800Verification pending — cross-check with the official manual
FR-F800 E.PCH — Pre-charge fault
Trip — immediate stop
CAUSE
Why does it occur?
- The inverter trips when the pre-charge time exceeds Pr
- 764 "Pre-charge time limit". The inverter trips when the measured value exceeds Pr
- 763 "Pre-charge upper detection level" during pre-charging. This function is available when Pr
- 764 and Pr
- 763 are set
- This protective function is not available in the initial status. Check that the Pr
- 764 setting is not too short. Check that the
REMEDY · Step by step
How to fix it?
- Set the Pr
- 764 setting longer. Set the Pr
- 763 setting larger. Set the Pr
- 127 setting higher. Check the connection to the pump
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
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