Service manual

111
Part name Check method and criterion
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
Defrost thermistor
Evaporation/Gas pipe tem-
perature thermistor
Normal abnormal
5kΩ ~ 55kΩ Open or short-circuit
Normal abnormal
100kΩ ~ 250kΩ Opened or short-circuited
Normal abnormal
2.6kΩ ~ 3.3kΩ Open or short-circuit
Normal abnormal
1Each phase 2.25Ω ~ 2.76Ω Open or short-circuit
Measure the resistance using a tester, after warming up the thermistor by holding by hand.
(Part temperature : 20°C ~40°C)
Discharge temperature
thermistor
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Compressor
W
U
V
WHT
RED
BLK
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Outdoor fan motor
Normal
WHT - BLK
BLK - YLW
BLK - RED
Open or
short-circuit
WHT
Protector specification
Short
Open
87I15:
135I5:
YLW
P
ORN
RED
BLK
123.0Ω ~ 150.0Ω
30.0Ω ~ 36.0Ω
181.0Ω ~ 221.0Ω
abnormal
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
LEV
WHT
RED
YLW
BRN
ORN
BLU
Lead wire color Normal
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
Abnormal
Open or short-circuit37.4Ω ~ 53.9Ω
P Inner protector
FUSE
BLK
RED
WHT
Part name
Outdoor fan
motor
(MF, MF61)
INNER FUSE
MUX-A10WV
145°C OPEN
INNER
PROTECTOR
MUX-A19/A20/A25/
A26WV
145i8°C OPEN
Check method and criterion
Figure
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Measure the resistance with a tester. (Part temperature -10°C ~ 40°C)
MUX-A19/A20/A25/
A26WV
Normal
1410 ~ 1730Ω
Abnormal
Open or short-circuit
Normal
MUX-A10WV
196 ~ 241
Ω
208 ~ 246 Ω
Abnormal
Open or
short-circuit
WHT-BLK
BLK-RED
Solenoid coil
21R, 21RA,
21RB, 21R1,
21R2, 21R3,
21R4
BLK
RED
WHT
P
MUX-A10WV
MUX-A10WV - MUX-A19WV - MUX-A20WV - MUX-A25WV - MUX-A26WV -
E1E1E1E1E1
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Normal
MUX-A25WV
79 ~ 98
Ω
129 ~ 158 Ω
MUX-A26WV
69 ~ 85
Ω
70 ~ 86 Ω
Abnormal
Open or
short-circuit
WHT-BLK
BLK-RED
MUX-A19WV
79 ~ 98
Ω
129 ~ 158 Ω
MUX-A20WV
79 ~ 98
Ω
129 ~ 158 Ω
MXZ-A18WV -
E1
OB307A4.qxp 03.2.19 4:11 PM Page 111