SiBE07-618_C CheckService Diagnosis 995.1.9 Capacitor Voltage CheckCheck No.12 Before this check, be sure to check the main circuit for short circuit.With the circuit breaker still on, measure the voltage according to the drawing of the model inquestion. Be careful never to touch any live parts.5.1.10 Power Module CheckCheck No.13Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx.0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage theconnector, press the protrusion on the connector. Follow the procedure below to measure resistance between the terminals of the DB1 andthe terminals of the compressor with a multi-tester. Evaluate the measurement results for ajudgment.OL lead wireThermistor lead wireFan motor lead wireCompressor lead wireReactor lead wireFour way valvelead wireElectronic expansion valvelead wireMultimeter(DC voltage range)(R5222)Negative (–) terminal oftester (positive terminal(+) for digital tester)DB1 (+) UVW DB1 (–) UVWPositive (+) terminal oftester (negative terminal(–) for digital tester)UVW DB1 (+) UVW DB1 (–)Resistance in OK several kΩ ~ several MΩResistance in NG 0 Ω or ∞W V U (R5237)
