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9-5. TROUBLESHOOTING CRITERION OF MAIN PARTS
MSZ-JP09WA MSZ-JP12WA
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Indoor fan motor (MF)
Horizontal vane motor (MV)
OBH820A
Check method and criterion
Measure the resistance with a multimeter.
Refer to 9-7. "Test point diagram and voltage", 1 or 2. "Indoor electronic
control P.C. board", for the chart of thermistor.
Check 9-6.
Measure the resistance between the terminals with a multimeter.
(Part temperature 50 - 86°F (10 - 30°C))
Color of the lead wire
RED-BLK
Normal
223 - 268 Ω
20
Figure
BLK
ROTOR
ROTOR
BLK
RED
BLK
BLK
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