17
6-5. Trouble criterion of main parts
SEZ-A12AR.TH
SEZ-A18AR.TH
SEZ-A24AR.TH
BLK
RED
GRN
YLW
ORN
YLW
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
241.4~261.2
Ω
19.0~20.6
Ω
25.4~27.5
Ω
12.6~13.7
Ω
47.9~51.9
Ω
A18AR
155.5~168.2
Ω
48.3~52.3
Ω
17.8~19.4
Ω
7.6~8.3
Ω
37.6~40.7
Ω
A24AR
97.0~105
Ω
53.8~58.3
Ω
14.0~15.3
Ω
6.3~6.9
Ω
27.0~29.3
Ω
8k
Ω
~20k
Ω
Abnormal
Abnormal
Opened or
short-circuited
Opened or short-circuited
OC303-A-1.qxp 04.9.21 4:08 PM Page 17
