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9-5. TROUBLE CRITERION OF MAIN PARTS
NTXWPH06B112AA NTXWPH09B112AA NTXWPH12B112AA NTXWPH15B112AA
NTXWPH18B112AA
Part name
Check method and criterion
Figure
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Measure the resistance with a tester.
Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control
P.C. board", for the chart of thermistor.
Indoor fan motor (MF)
Check 9-6. "Check of indoor fan motor".
Vane motor (MV1)
(HORIZONTAL)
Measure the resistance between the terminals with a tester.
(Temperature: 50 - 86°F (10 - 30°C))
Color of the lead wire
Normal
RED - SKY*
262 - 328 Ω
SKY
SKY
RED
SKY
SKY
ROTOR
Vane motor (MV2)
(VERTICAL)
Measure the resistance between the terminals with a tester.
(Temperature: 50 - 86°F (10 - 30°C))
Color of the lead wire
Normal
RED - SKY*
219 - 273 Ω
SKY
SKY
RED
SKY
SKY
ROTOR
i-see SENSOR MOTOR
(MT)
Measure the resistance between the terminals with a tester.
(Temperature: 50 - 86°F (10 - 30°C))
Color of the lead wire
Normal
RED - BLK
262 - 328 Ω
BLK
BLK
RED
BLK
BLK
ROTOR
*
SKY=SKY BLUE
OBHT872
