Mitsubishi Electric CITY MULTI PUMY-P112VKM6, Руководство по обслуживанию

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OCH790 _90
8-7. How to check the parts
8-7-1. Checkpoints for each part
■
Thermistors
Disconnect the connector then measure the resistance with a multimeter (at the ambient temperature 10 to 30°C [50 to
80°F]).
Thermistors Normal Abnormal
TH4 (Compressor) 160 to 410 kΩ Open or short
TH2 (HIC pipe) 4.3 to 9.6 kΩ
TH3 (Outdoor liquid pipe)
TH6 (Suction pipe)
TH7 (Ambient)
TH8 (Heat sink)* 39 to 105 kΩ
* TH8 is internal thermistor of power module. (V)
■ Fan motor (MF1, MF2)
Red
Blue
Brown
Orange
White
M
1
2
3
4
5
6
7
Measure the resistance between the connector pins with a multimeter (at the ambient temperature 20°C [68°F]).
Connector pins Normal Abnormal
Red - Blue 1.1 ± 0.05 MΩ Open or short
(Short, for White - Blue)
Brown - Blue 40 ± 4 kΩ
Orange - Blue 220 ± 22 kΩ
White - Blue Open
■ Solenoid valve coil <4-way valve> (21S4)
Measure the resistance between the terminals with a multimeter (at the ambient temperature 20°C [68°F]).
Normal Abnormal
2085 ± 208.5 Ω Open or short
■ Motor for compressor (MC)
W
V
U
Measure the resistance between the terminals with a multimeter (at the ambient temperature 20°C [68°F]).
Model Normal Abnormal
PUMY-P•VKM 0.305 ± 0.015 Ω Open or short
PUMY-P•YKM 0.466 ± 0.023 Ω
■ Solenoid valve coil <Bypass valve> (SV1)
Measure the resistance between the terminals with a multimeter (at the ambient temperature 20°C [68°F]).
Normal Abnormal
1182.5 ± 83 Ω Open or short
■ Linear expansion valve (LEV-A)
1
2
3
4
5
M
Gray
Orange
Red
Yellow
Black
Connector pins Normal Abnormal
Gray - Black 46 ± 3 Ω Open or short
Gray - Red
Gray - Yellow
Gray - Orange
■ Linear expansion valve (LEV-B)
1
2
3
4
5
M
Red
Blue
Orange
Yellow
White
Connector pins Normal Abnormal
Red - White 46 ± 4 Ω Open or short
Red - Orange
Red - Yellow
Red - Blue