MITSUBISHI ELECTRIC MXZ-24UV User Manual
Page 27
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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
5k
Ω
~ 55k
Ω
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
100k
Ω
~ 250k
Ω
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
95
I
15
:
135
I
5
:
BLK
P
ORN
BLU
RED
YLW
LEV
WHT
RED
YLW BRN
ORN
BLU
RED - BLK
69.0
Ω
~ 86.0
Ω
23.0
Ω
~ 30.0
Ω
10.0
Ω
~ 13.0
Ω
73.0
Ω
~ 91.0
Ω
43
Ω
~ 52
Ω
abnormal
12-4. Trouble criterion of main parts
Normal
abnormal
1Each phase 0.53
Ω
~ 0.66
Ω
Opened or short-circuited
Normal
abnormal
1640
Ω
~ 2310
Ω
Opened or short-circuited
+
-
+
-
+
-
P
Inner protector
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