Mitsubishi MCFH-13NV - Trouble Criteria of Main Parts

45
Measure the resistance between the terminals with a tester.
(Part 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 temperature -10°C ~ 40°C)
Measure the resistance between the terminals with a tester.
(Part temperature -10°C ~ 40°C)
Figure
C
S
R
BLK
RED
WHT
BLK RED ORNYLW BLU BRN
WHT
GRN
YLW
P
13/18/24NV
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
C-R
C-S
Normal
Abnormal
Opened or
short-circuited
18/24NV
WHT-BLK
Normal
Abnormal
Opened or
short-circuited
102 ~ 126Ω
97 ~ 120Ω
18NV
WHT-BLK
BLK-RED
13NV
155 ~ 190Ω
364 ~ 446Ω
13NV
79~87Ω175~190Ω
BLK-YLW 63~69Ω66~72Ω
YLW-BLU 34~38Ω45~50Ω
BLU-BRN 25~29Ω30~33Ω
BRN-RED 13~15Ω22~24Ω
Abnormal
Opened or
short-circuited
13/18NV
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 temperature10°C ~ 30°C)
Normal Abnormal
Opened or
short-circuited
RED-PNK/ORN
BRN-YLW/BLU
329
~357 Ω
24NV
0.84~1.04Ω
1.82~2.24Ω
55 ~ 68Ω
24NV
BLK-YLW
YLW-RED
26 ~ 33Ω
55 ~ 68Ω
24NV
BLK YLW
RED ORN
WHT
MAIN
AUX.2
AUX.1
P
Defrost
thermistor
(RT61)
Measure the resistance with a tester.
(Part temperature - 10°C ~ 40°C)
Normal
5kΩ ~ 60kΩ
Abnormal
Opened or short-circuited
MCFH-13NV - MCFH-18NV -
MCFH-24NV -
E3
E3E4
MUCFH-13NV - MUCFH-18NV -
MUCFH-24NV -
E3
E3E4
Ambient temper-
ature thermistor
(RT63)
MUCFH-24NV
only
OB267--2.qxp 01.4.13 1:01 PM Page 45