Samsung Electronics
5-15
5-5 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 (CN43)
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
05V~4.5V
Yellow, Orange
5V
between
Resistance
Remark
Red, Yellow
143±10
Ω
Low
Blue, Red
58±10
Ω
High
Содержание AD18A1(B1)E09
Страница 2: ... Samsung Electronics Co Ltd NOV 1998 Printed in Korea Code No DB81 10179A 1 ...
Страница 4: ...1 2 Samsung Electronics MEMO ...
Страница 26: ...3 18 Samsung Electronics MEMO ...
Страница 42: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...
Страница 50: ...Samsung Electronics 7 1 7 PCB Diagrams 7 1 Main PCB ...
Страница 54: ...Samsung Electronics 8 2 8 2 Outdoor Unit UD24A1 B1 E2 UD18A1 B1 E2 UD19A1 B1 E2 ...
Страница 56: ...Samsung Electronics 9 1 9 Schematic Diagrams 9 1 Indoor Unit ...
Страница 57: ...9 2 Remote Control Samsung Electronics 9 2 ...