Carrier 42NQV025M - Page 74

FILE NO. SVM-07009
– 74 –
Disconnect the connector and measure the resistance value with
tester. (Normal temp.)
To item of How to judge whether remote controller is good or bad of
the Judgement of trouble by symptom.
Measure the resistance value of each winding coil by using the
tester. (Under normal temp. 25°C)
Since judgement of AC motor is difficult on the single motor, refer to
10-5-1. (3).
1 Room temp. (TA) sensor
Heat exchanger (TC) sensor
2 Remote controller
3 Louver motor
24BYJ48
4Indoor fan motor
11-8-3. Indoor unit (Other parts)
No. Part name Checking procedure
10°C 20°C 25°C 30°C 40°C
20.7 12.6 10.0 7.9 4.5
White Black
Red
1
2
3
4
5
White
Yellow
Yellow
Yellow
Yellow
Position Resistance value
1 to 4
1 to 6
380
±
40Ω
2 to 3
2 to 5
11-8-4. Outdoor unit (38NYV025M, 38NYV025M-A)
1 Compressor
(Model : DA89X1C-23FZ)
2 Outdoor fan motor
(Model : SKF-240-20B-1)
Disconnect the connector, and measure resistance value with the
tester. (Normal temperature)
3 Outdoor temperature sensor
(TO), outdoor heat exchanger
temperature sensor (TE)
No. Part name Checking procedure
Measure the resistance value of each winding by using the tester.
Under 20°C
Measure the resistance value of winding by using the tester.
For details, refer to Section 10-9.
Position Resistance value
Red - White 1.1Ω
White - Black 1.1Ω
Black - Red 1.1Ω
Temperature
Sensor
TA, TC (kΩ)
1
Red
Black
White
4
25
36
Red
Black
White
Position Resistance value
White - Black 260.1Ω
Black - Red 235.2Ω
At 20°C
1 : White 4 : −
2 : − 5 : −
3 : Red 6 : Black
TGa : Heat pump model only.
TO, TE : Refer to the TA, TC characteristic table in Indoor.