25
2. Trouble criterion of main parts
Part name
Figure
Check method and criterion
Outdoor fan motor(MF)
INNER FUSE
152
i
:
CUT OFF
0
5
R.V. coil(21S4)
LEV(Expansion valve)
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
WHT – BLK
BLK – RED
Abnormal
Open or
short-circuit
Normal
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
Normal
1.90 k
"
~ 2.39 k
"
Abnormal
Open or short-circuit
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Abnormal
Open or
short-circuit
Normal
39
"
~ 50
"
Measure the resistance with a tester.
(Part temperature : –15˚C ~ 40˚C)
Measure the resistance with a tester. (Part temperature –15˚C ~ 40˚C)
Color of lead wire
Color of lead wire
Discharge temperature
thermistor(RT62)
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
150 k
"
~ 600 k
"
30 k
"
~ 180 k
"
Abnormal
Open or short-circuit
Normal
5 k
"
~ 65 k
"
Abnormal
Open or short-circuit
Defrost thermistor
(RT61)
Fin temperature
thermistor(RT64)
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
Abnormal
Open or short-circuit
Ambient temperature
thermistor(RT65)
WHT
RED
BLK
299
"
~ 374
"
242
"
~ 304
"
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
Compressor(MC)
Defrost heater(H)
Measure the resistance with a tester.
(Part temperature -15˚C ~ 40˚C)
Normal
341
"
~ 427
"
Abnormal
Open or short-circuit
U-V
U-W
V-W
Abnormal
Open or
short-circuit
Normal
MUZ-A12YV
MUZ-A12YVH
0.42
"
~ 0.53
"
MUZ-A09YV
MUZ-A09YVH
1.31
"
~ 1.66
"
2
3
W
U
V
1
WHT
RED BLK
FUSE
LEV
WHT
6
RED
1
ORN
4
YL
W
5
BRN
2
BLU
3
MUZ-A09YV -
MUZ-A12YV -
MUZ-A09YVH -
MUZ-A12YVH -
E1
E1
E1
E1
OB328 A--1qxp 04.4.26 4:49 PM Page 25
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
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