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Part name Check method and criterion
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
Defrost thermistor
Evaporation / Gas pipe
temperature thermistor
Normal abnormal
5kΩ ~ 55kΩ Opened or short-circuited
Measure the resistance using a tester, after warming up the thermistor by holding by hand.
(Part temperature : 20°C ~40°C)
Discharge temperature
thermistor
Normal abnormal
100kΩ ~ 250kΩ Opened or short-circuited
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Compressor
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Outdoor fan motor
Normal
WHT - BLK
BLK - YLW
YLW - BLU
Opened or
short-circuited
(Not including
WHT - ORN)
Measure the resistance using a tester. (Part temperature -10°C ~ 40°C)
R. V. coil
Measure the resistance using a tester.(Part temperature -10°C ~ 40°C)
Linear expansion valve
Lead wire color Normal
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
Abnormal
Opened or short-circuited
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
High pressure switch
(HPS)
Pressure Normal abnormal
Operation OFF
HPS1 2.35 ± 0.15MPa (24 ± 1.5kg / cm
2
)
HPS2 2.55 ± 0.2MPa (26 ± 2kg / cm
2
)
HPS1 2.75 MPa (28 kg / cm
2
)
HPS2 3.43 MPa (35 kg / cm
2
)
Open
Short
Other than
those list-
ed at left
0.05
0.1
0
0.15
0.5
1.0
0
1.5
+
-
W
U
V
WHT
RED
BLK
WHT
Protector specification
Short
Open
95I15:
135I5:
BLK
P
ORN
BLU
RED
YLW
LEV
WHT
RED
YLW
BRN
ORN
BLU
RED - BLK
69.0Ω ~ 86.0Ω
23.0Ω ~ 30.0Ω
10.0Ω ~ 13.0Ω
73.0Ω ~ 91.0Ω
43Ω ~ 52Ω
abnormal
12-4. Trouble criterion of main parts
Normal abnormal
1Each phase 0.53Ω ~ 0.66Ω Opened or short-circuited
Normal abnormal
1640Ω ~ 2310Ω Opened or short-circuited
+
-
+
-
+
-
P Inner protector
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