MXZ-SM36NAMHZ Service Manual

113
OCH789
M
1
2
3
4
5
M
Red
Blue
Orange
Yellow
White
Parts name
Checkpoints
Disconnect the connector then measure the resistance with a multimeter.
(At the ambient temperature 50 to 80°F [10 to 30°C]
Thermistor (TH3)
<Outdoor liquid pipe>
Thermistor (TH4)
<Compressor>
Thermistor (TH6)
<Suction pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
Normal
160 to 410 k
4.3 to 9.6 k
39 to 105 k
TH4
TH2
TH3
TH6
TH7
TH8
Abnormal
Open or short
Measure the resistance between the terminals with a multimeter.
(At the ambient temperature 68°F [20°C)
Solenoid valve coil
<4-way valve>
(21S4)
Motor for compressor
(MC)
Measure the resistance between the terminals with a multimeter.
(At the ambient temperature 68°F [20°C])
Normal
1197 ± 10
Abnormal
Open or short
Solenoid valve coil
<Bypass valve>
(SV1)
<Switching valve>
(SV2)*
2
*2 Only NAMHZ model.
* See the spec name plate indicated in the diagram for the model name of fan motor
* Where "X" in model name of fan motor represents numbers and letters
Linear expansion Valve
(LEV A)
Linear expansion Valve
(LEV B)
Measure the resistance between the terminals with a multimeter.
(Winding temperature 68°F [20°C])
W
V
U
Normal
1567.5 ± 156.8
Open
Abnormal
Open or short
Normal
0.305 ± 0.015
Abnormal
Open or short
Normal
Gray - Black Gray - Red
Gray - Yellow
Gray - Orange
Abnormal
46 ± 3
Open or short
Normal
Red - White Red - Orange
Red - Yellow
Red - Blue
Abnormal
46 ± 4
Open or short
Normal
1 - 4 5 - 4
6 - 4
7 - 4
SIC-82XX / SIC-88XX
SIC-71XX / SIC-81XX
Abnormal Model name of fan motor *
Thermistor (TH2)
<Hic pipe>
1
2
3
4
5
M
Gray
Orange
Red
Yellow
Black
Measure the resistance between the connector pins with a multimeter.
(At the ambient temperature 68°F [20°C])
Fan motor (MF1, MF2)
M
1
2
3
4
5
6
7
Open or short
(Short, for 7 - 4)
1.1 ± 0.05 M 40 ± 4 k 220 ± 22 k
Open 150 ± 15k 55 ± 11 k
Open
8-7. HOW TO CHECK THE PARTS