Mitsubishi Electric MSZ-D30NA Service Manual page 24

9-5. TROUBLESHOOTING CRITERION OF MAIN PARTS
MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12 (MAIN), RT13
(SUB))
Indoor fan motor (MF)
Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)
OBH501D
Check method and criterion
Measure the resistance with a multimeter.
Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control
P.C. board", the chart of thermistor.
Check 9-6. .
Measure the resistance between the terminals with a multimeter.
(Part temperature 50 ~ 86°F)
Horizontal vane motor (MV1)
Color of the lead wire
BRN - other one
Vertical vane motor (MV2)
Color of the lead wire
BRN - other one
Normal
240 ~ 260 Ω
Normal
282 ~ 306 Ω
24
Figure
RED
ROTOR
YLW
BRN
ORN GRN