33
Measure the resistance between the terminals with a tester.
(Part wiring temperature10°C ~ 30°C)
Compressor
(MC)
INNER
PROTECTOR
MUCF-C13UV
150
i
5
:
OPEN
90
i
10
:
CLOSE
MUCF-C18UV
155
i
5
:
OPEN
90
i
10
:
CLOSE
MUCF-C24UV
160
i
5
:
OPEN
90
i
10
:
CLOSE
Room
temperature
thermistor (RT11)
2. Trouble criterion of main parts
Part name
Indoor coil
thermistor
(RT12)
Indoor fan
motor
(MF)
INNER
PROTECTOR
120
i
15
:
OPEN
77
i
15
:
CLOSE
Outdoor fan
motor
(MF)
INNER
PROTECTOR
MUCF-C13UV
135
i
5
:
OPEN
MUCF-C18UV
MUCF-C24UV
145
i
8
:
OPEN
Reference
(88
i
15
:
CLOSE)
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 ORN
YLW BLU BRN
WHT
GRN
YLW
P
MAIN
BLK
YLW
RED ORN WHT
MAIN1
AUX.
MAIN2 P
MUCF-C24UV
Normal
8k
Ω
~ 20k
Ω
Abnormal
Open or short-circuit
Terminal
Normal
MUCF-C13UV
1.98~2.43
Ω
3.59~4.39
Ω
MUCF-C18UV
0.95~1.17
Ω
1.92~2.36
Ω
MUCF-C24UV
0.59~0.73
Ω
1.78~2.18
Ω
C-R
C-S
Normal
Abnormal
Open or
short-circuit
MCF-C24UV
WHT-BLK
Color of
lead wire
Normal
Abnormal
Open or
short-circuit
MUCF-C18UV
71 ~ 88
Ω
90 ~ 111
Ω
MUCF-C24UV
WHT-BLK
BLK-RED
MUCF-C13UV
155 ~ 190
Ω
364 ~ 446
Ω
___
___
81~ 100
Ω
BLK-YLW
MCF-C18UV
MCF-C13UV
80~88
Ω
79~87
Ω
195~212
Ω
BLK-YLW
44~49
Ω
63~69
Ω
44~48
Ω
YLW-BLU
35~39
Ω
34~38
Ω
31~34
Ω
BLU-BRN
43~47
Ω
25~29
Ω
42~47
Ω
BRN-RED
13~15
Ω
13~15
Ω
22~25
Ω
Abnormal
Open or
short-circuit
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
Open or
short-circuit
RED-PNK/ORN
BRN-YLW/BLU
329
~
357
Ω
BLK
RED WHT
MAIN
AUX.
P
102 ~ 126
Ω
97 ~ 120
Ω
MCF-C13UV -
MCF-C18UV -
MCF-C24UV -
E1
E1
E1
MUCF-C13UV -
MUCF-C18UV -
MUCF-C24UV -
E1
E1
E1
Color of
lead wire
MUCF-C18UV
MUCF-C13UV
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