Method Of Testing Ipm Module Short Circuit - Gree GRS-CQ6.0Pd/Na-K Service Manual

AIR-TO-WATERHEATPUMP

Method of Testing IPM Module Short Circuit:

(1). Preparation before test: prepare a universal meter and turn to its diode option,
and then remove the wires U, V, W of the compressor after it is powered off for
one minute.
(2). Testing Steps
Step 1: put the black probe on the place P and the red one on the wiring terminal
U, V, W respectively as shown in the following figure to measure the voltage
between UP, VP and WP.
Step 2: put the red probe on the place N and the black one on the wiring terminal
U, V, W respectively as shown in the following figure to measure the voltage
between NU, NV and NW.
(3). If the measured voltages between UP, VP, WP, NU, NV, NV are all among
0.3V～0.7V, then it indicates the IPM module is normal; If any measured valve is
0, it indicates the IMP is damaged.
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