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Samsung Electronics
5-9
5-4 Fault Diagnosis of Major Parts
Parts
Temp.Sensor
Heat ex. Sensor
Indoor Fan Motor
Outdoor Fan Motor
Stepping Motor
(UP/DOWN swing motor)
Diagnosis
Measure resistance with a tester.
Normal
8
K
Ω
~27
K
Ω
at ambient temperature (+0°C ~ +30°C)
Abnormal
∞
, O
Ω
… open or short
Measure resistance between terminals (CN73) with a tester
Normal
At ambient temperature (10°C ~ 30°C)
Abnormal
Measure the voltage between ground and signal wire of the fan motor
Normal
Abnormal
Abnormal if voltage does not change from 0V to 5V.
Normal
At ambient temperature (10°C ~ 30°C)
Abnormal
∞
, O
Ω
… open or short
Measure resistance between red wire and each terminal.
Normal
Approx. 380
Ω
at ambient temperature (20°C ~30°C)
Abnormal
∞
, O
Ω
… open or short
between
Resistance
Red, Yellow
190±10
Ω
Red, Blue
170±10
Ω
between
Voltage
Gray, Orange
0.5V~4.5V
Yellow, Orange
5V
between
Resistance
Black, White
350±10
Ω
Black, Red
270±10
Ω
Содержание AQ18A1QE/B
Страница 6: ...Product Specifications 2 4 Samsung Electronics 2 3 3 b 18K BTU Front view Rear view 582 787 340 ...
Страница 7: ...2 5 Samsung Electronics 2 4 Pressure Graph 24K BTU 18K BTU ...
Страница 34: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...
Страница 36: ...Samsung Electronics 6 3 18 1 18 5 18 6 18 4 18 2 18 3 6 2 Outdoor Unit 6 2 1 18K BTU ...
Страница 43: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 Main PCB B B B ...
Страница 46: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit ...
Страница 49: ...Samsung Electronics 10 1 10 Schematic Diagrams 10 1 Indoor Unit PNA4612MOOXD ...