GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
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(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 IPM is damaged.
GUD36W2/D-D(U)