Mitsubishi MUZ-A18YV Service Manual page 34

2. Trouble criterion of main parts
MUZ-A18YV -
E1
MUZ-A24YV -
E1
MUZ-A26YV -
E1
Part name
Defrost thermistor/
Outdoor heat exchanger
temperature thermistor
Discharge temperature
thermistor
Fin temperature thermistor
Compressor
W
RED
V
U
WHT BLK
Outdoor fan motor
RED
U (W)
WHT
(V)
V
BLK
(U)
W
R. V. coil
Linear expansion valve
WHT
RED LEV
ORN
YLW BRN
BLU
High pressure switch
(HPS)
MUZ-A26YV
Measure the resistance using a tester.
(Part temperature : -10°C ~ 40°C)
Normal
5kΩ ~ 55kΩ
Measure the resistance using a tester, after warming up the thermistor by holding by hand.
(Part temperature : 20°C ~ 40°C)
Normal
100kΩ ~ 250kΩ
Measure the resistance using a tester.
(Part temperature : 10°C ~ 40°C)
Normal
25kΩ ~ 100kΩ
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Normal
MUZ-A18/A24YV
0.40Ω ~ 0.49Ω
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Color of
lead wire
RED - BLK
BLK - WHT
WHT - RED
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)
Color of lead wire
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
MUZ-A26YV
HPS1
Check method and criterion
MUZ-A26YV
1.29Ω ~ 1.49Ω
Normal
13.4Ω ~ 16.4Ω
Normal
2.6kΩ ~ 3.3kΩ
Normal
37.4Ω ~ 53.9Ω
Pressure
Operation OFF
3.7 ± 0.15MPa
+
4.8 MPa
0.05
-
0.1
34
abnormal
Open or short-circuit
abnormal
Opened or short-circuit
abnormal
Open or short-circuit
abnormal
Open or short-circuit
abnormal
Open or
short-circuit
(Not including
WHT - ORN)
abnormal
Open or short-circuit
Abnormal
Open or
short-circuit
Normal abnormal
Other than
Short
those list-
ed at left
Open