P1(Over Voltage Or Too Low Voltage Protection Diagnosis And Solution) - Kaisai FLY INVERTER Series Service Manual

5.11 P1(Over voltage or too low voltage protection diagnosis and solution)

Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit.
Recommended parts to prepare:
• Power supply issues
• System leakage or blockage
• Faulty PCB
Troubleshooting and repair:
Check the connections and wires.
YES
YES
Power on and measure the
voltage between P and N.
While the unit is in standby,
YES
YES
Replace the reactor.
NO
Ensure proper connections or
NO
replace the wires.
NO Replace the IPM board.
NO Replace outdoor PCB.
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