Cautions On Compressor Drive Replacement - Gree GMV5E Series Service Manual

GREE
For details about each index, please consult after-sale persons and technicians.

3.3 Cautions on Compressor Drive Replacement

1. Disconnect the power supply of the system. Set a multimeter to the AC voltage gear and measure
voltage between two of the lines (L1, L2, L3, and N). The measuring result should be 0 V
(sometimes, multimeters may be faulty and read false values). Set a mark beside the power
supply for warning.
2. Measure compressor drive DC bus voltage between two wire terminals of P, U, V, W and N. Set
the multimeter to the DC voltage gear and measure the voltage between P and N. The voltage
should be lower than 36 V. If no multimeter is available, wait for 20 minutes before performing the
steps below.
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
Note: The blue squares
indicate pads.
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