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RAM-90QH5
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Reversing Valve Control Circuit - Hitachi RAM-90QH5 Service Manual
Outdoor unit
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Information booklet & user manual
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Table Of Contents
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Table of Contents
Troubleshooting
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Table of Contents
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5. Reversing valve control circuit
Reversing valve
DC voltmeter
or multimeter
CN4
3
D841
1
Q841
V
OV
35V
5V
PQ841
R843
R832
R841
Fig. 5-1
– 65 –
Micro
computer
16
1
28
IC9
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Table of Contents
Troubleshooting
Precautions for checking
74
Troubleshooting of the intelligent power module (IPM)
78
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