Pioneer QUANTUM INVERTER Series Service & Troubleshooting Manual page 133

3. Indoor AC Fan Motor
Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage
of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply) or 50V (115V power supply),
the PCB faulted and needs to be replaced.
Troubleshooting 25
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