Table of Contents
5. Trouble Shooting
Judgment of the IPM part fault of
Purpose
PCB assembly.
Step
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.
■ IPM Check Point
Division
2.5 kW
1. Judgment of damage of IGBT
Items for checking
2. Checking the soldering state
Flow of Inspection
IPM Check Point
[IPM Pin Arrangement and Pin Numbers]
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