Mitsubishi Electric MSH-GD80VB-E1 Service Manual page 18

10-4. TROUBLE CRITERION OF MAIN PARTS
MSH-GD80VB
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12 (main), RT13 (sub))
Indoor fan motor (MF)
INNER
PROTECTOR
135 ± 5 OPEN
Horizontal vane
motor (MV1)
Vertical vane
motor (MV2)
OBH513A
Check method and criterion
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Refer to 10-6."Test point diagram and voltage",
"Indoor electronic control P.C. board", for the chart of thermistor.
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of
lead wire
WHT – BLK 132 Ω ~ 144 Ω
BLK – RED 152 Ω ~ 166 Ω
Measure the voltage power ON.
Color of lead wire
BRN – YLW
(When fan revolved one time)
YLW – GRY
Measure the resistance between the terminal with a tester.
(Part temperature 10°C ~ 30°C)
Normal
282 Ω ~ 306 Ω
Normal
Normal
4.5 ~ 5.5 V
0 V 5 V 0 V
(Approx.)
18 18
Figure
MAIN
AUX.
P
RED
ROTOR
YLW
BRN
ORN GRN
P : INNER PROTECTOR