Service manual

14
MSZ-A18YV -
MSZ-A24YV -
MSZ-A26YV -
E1
E1
E1
Part name Figure
Check method and criterion
Indoor fan motor(MF)
MSZ-A18YV
INNER FUSE
145: CUT OFF
MSZ-A24/A26YV
INNER
PROTECTOR
135i 5: OPEN
86i 15: CLOSE
Color of
lead wire
WHT – BLK
BLK – RED
Abnormal
Open or
short-circuit
MSZ-A18YV
282 " ~ 305 "
141 " ~ 152 "
Measure the resistance with a tester.
(Part temperature 10˚C ~ 30˚C)
Normal
8 k" ~ 20 k"
Abnormal
Open or short-circuit
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(main), RT13(sub))
Horizontal vane
motor(MV1)
Vertical vane
motor(MV2)
Motor part
Sensor part
Measure the resistance between the terminals with a tester.
(Part temperature 10˚C ~ 30˚C)
Color of lead wire
BRN – YLW
YLW – GRY
Abnormal
Remain 0V or 5V
Normal
4.5 ~ 5.5V
Measure the voltage power ON.
(When fan revolved one time)
0V➔5V➔0V
(Approx.)
Normal
282 " ~ 306 "
Abnormal
Open or short-circuit
Measure the resistance between the terminal with a tester.
(Part temperature 10°C ~ 30°C)
BLK
RED
WHT
GRY
YLW BRN
MAIN
AUX
FUSE
BLK
RED
WHT
GRY
YLW BRN
MSZ-A24/A26YV
132 " ~ 144 "
152 " ~ 166 "
Normal
MSZ-A18YV
MSZ-A24/A26YV
YLW
GRNORN
BRN
RED
ROTOR
MAIN
AUX.
P
:INNER PROTECTOR
P
2. Trouble criterion of main parts
OB345-1.qxp 04.4.22 11:44 AM Page 14