Service manual
37
Measure the resistance between the terminals with a tester.
(Part wiring temperature10°C ~ 30°C)
Compressor
(MC)
Room
temperature
thermistor (RT11)
11-2-2. Trouble criterion of main parts
Part name
Indoor coil
thermistor
(RT12)
Indoor fan
motor
(MF)
Outdoor fan
motor
(MF)
Check method and criterion
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Measure the resistance between the terminals with a tester.
(Part wiring temperature -10°C ~ 40°C)
Measure the resistance between the terminals with a tester.
(Part wiring temperature -10°C ~ 40°C)
Figure
C
S
R
BLK
RED
WHT
BLK RED ORNYLW BLU BRN
WHT
GRN
YLW
P
MAIN
13/18/24NV
BLKYLW
RED ORN
WHT
MAIN1
AUX.
MAIN2
P
24NV
Normal
8kΩ ~ 20kΩ
Abnormal
Opened or short-circuited
Normal
13NV
1.86~2.28Ω
3.50~4.29Ω
18NV
1.05~1.30Ω
2.38~2.92Ω
24NV
0.84~1.04Ω
1.82~2.24Ω
C-R
C-S
Normal
Abnormal
Opened or
short-circuited
24NV
WHT-BLK
Normal
Abnormal
Opened or
short-circuited
18NV
71 ~ 88Ω
90 ~ 111Ω
24NV
WHT-BLK
BLK-RED
13NV
155 ~ 190Ω
364 ~ 446Ω
___ ___
81~ 100Ω
BLK-YLW
18NV13NV
79~87Ω175~190Ω195~212Ω
BLK-YLW
63~69Ω66~72Ω44~48Ω
YLW-BLU
34~38Ω45~50Ω31~34Ω
BLU-BRN
25~29Ω30~33Ω42~47Ω
BRN-RED
13~15Ω22~24Ω22~25Ω
Abnormal
Opened or
short-circuited
13NV
BLK
RED ORN
WHT
MAIN
AUX.
P
: Inner protector
P
BRN
YLW
PNK
RED
ORN
BLU
ROTOR
Vane
motor
(MV)
Measure the resistance between the terminals with a tester.
(Part wiring temperature10°C ~ 30°C)
Normal Abnormal
Opened or
short-circuited
RED-PNK/ORN
BRN-YLW/BLU
329
~357
Ω
MCF-13NV - , MCF-18NV -
MCF-24NV -
E3
E3E4
MUCF-13NV - , MUCF-18NV -
MUCF-24NV -
E3
E3E4
18NV
BLK
RED
WHT
MAIN
AUX.
P
102 ~ 126Ω
97 ~ 120Ω
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