Part 4 Trouble Shooting
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IPM Check PointDivision
2 kW
Purpose
Judgment of the IPM part fault of
PCB assembly.
Items for checking
1. Judgment of damage of IGBT
2. Checking the soldering state
■ IPM Check Point
[IPM Pin Arrangement and Pin Numbers]
Step Flow of Inspection
1 Turn the power off (wait until the outdoor device LED is turned off)
2 Remove compressor wires.
3 Measure the voltage as shown in the figure.
4 Check the voltage for being in the range of 0.3~0.5V
5 Judge IPM Pins for short.
27890W0X0Y
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