8-4. Trouble criterion of main parts

MSH-A18ND

MSH-A24ND

Part name

 

 

 

Check method and criterion

Room temperature

Measure the resistance with a tester.

 

 

 

thermistor (RT11)

(Part temperature 10˚C ~ 30˚C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor coil thermistor

 

 

 

Normal

 

 

 

 

 

 

 

(RT12(main), RT13(sub))

 

 

 

8 k" ~ 20 k"

 

 

 

 

 

 

 

 

 

 

 

Measure the resistance between the terminals with a tester.

 

 

 

 

(Part temperature 10˚C ~ 30˚C)

 

 

 

 

part

 

 

 

 

 

 

 

 

 

Indoor fan motor(MF)

 

Color of

 

 

Normal

 

 

 

 

 

 

 

Motor

 

lead wire

 

MSH-A18ND

 

MSH-A24ND

 

 

 

 

 

 

MSH-A18ND

 

WHT – BLK

 

198 " ~ 214 "

 

132 " ~ 144 "

 

 

 

 

 

 

 

 

 

 

BLK – RED

 

209 " ~ 227 "

 

152 " ~ 166 "

 

INNER FUSE

 

 

 

 

 

 

 

 

 

 

 

145: CUT OFF

 

 

 

 

 

 

 

 

 

 

 

MSH-A24ND

part

Measure the voltage power ON.

 

 

 

 

 

 

 

 

 

 

 

 

INNER

 

Color of lead wire

 

 

Normal

 

 

 

PROTECTOR

 

 

 

 

 

 

 

 

 

Sensor

 

BRN – YLW

 

4.5 ~ 5.5V

 

 

135i 5: OPEN

 

 

 

 

 

 

 

 

 

 

 

 

YLW – GRY

 

(When fan revolved one time)

 

 

 

 

 

 

 

0V5V0V

 

 

 

 

 

 

 

(Approx.)

 

 

 

Horizontal vane

 

Measure the resistance between the terminal with a tester.

 

(Part temperature 10°

C ~ 30° C)

 

 

 

motor(MV1)

 

 

 

 

 

 

 

 

 

 

 

Vertical vane

 

 

 

Normal

 

 

 

 

 

 

 

motor(MV2)

 

 

282" ~ 306 "

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

MSH-A18ND

MAIN

AUX

FUSE

BLK BRN YLW GRY RED

WHT

MSH-A24ND

MAIN

AUX.

P

 

BLK BRN YLW GRY RED

WHT

RED ROTOR

YLW

BRN

ORN GRN

P :INNER PROTECTOR

13

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Mitsubishi Electronics MSH-A18ND service manual Trouble criterion of main parts