Mitsubishi SEZ-A12AR - Trouble Criterion of Main Parts

17
6-5. Trouble criterion of main parts
SEZ-A12AR.TH
SEZ-A18AR.TH
SEZ-A24AR.TH
BLK RED
GRN
YLW
ORNYLW
BLU
BRN
WHT
P
Room temperature
thermistor
(RT11)
Condenser/evaporator
temperature thermistor
(RT13)
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Measure the resistance between the terminals with a tester.
(Coil wiring temperature 10°C ~ 30°C)
P : Thermal fuse
145 ± 2˚C
Pipe temperature
thermistor/liquid
(RT12)
Indoor fan motor
(MF)
Check method and criterion
Part name
Normal
A12AR
Normal
WHT-BLK
BLK-BLU
BLU-YLW
YLW-BRN
BRN-RED
241.4~261.2Ω
19.0~20.6Ω
25.4~27.5Ω
12.6~13.7Ω
47.9~51.9Ω
A18AR
155.5~168.2Ω
48.3~52.3Ω
17.8~19.4Ω
7.6~8.3Ω
37.6~40.7Ω
A24AR
97.0~105Ω
53.8~58.3Ω
14.0~15.3Ω
6.3~6.9Ω
27.0~29.3Ω
8kΩ~20kΩ
Abnormal
Abnormal
Opened or
short-circuited
Opened or short-circuited
OC303-A-1.qxp 04.9.21 4:08 PM Page 17