Samsung Electronics
5-3
5-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is the indoor unit fan motor properly connected with the connector (CN73)?
(2) Is the AC voltage corre c t ?
(3) Is HALL IC in indoor fan motor properly connected with the connector (CN43)?
(4) Is the running capacitor properly connected with the solder part of the PCB?
2 ) Troubleshooting pro c e d u re
Troubleshooting
After unplugging out the power cord should
be reconnected within five seconds.
Does the operating lamp(Green) blink?
Does the Solid State Relay(SS71) work
properly?
Is the supply voltage of the fan
motor sufficient?
Test rod location
PCB CN73
Condition
Fan operate
= AC 180V
Normal
voltage
Pin 3, Pin 5
YES
YES
YES
NO
NO
NO
Check as in the procedur “NO power parts” Refer tp
page 5-2.
Microcomputer is out of order.
PCB is
out of order.
PCB should be
replaced.
Replace MFC
Fan motor
should be replaced.
Fan motor
is out of order.
MF-C is out of order
YES
-
Test rod location
+
SS71+
SS71-
12V
Normal
Voltage
.
.
Содержание AQT18A1QE/B
Страница 2: ... Samsung Electronics Co Ltd DEC 1998 Printed in Korea Code No DB81 00029A 1 ...
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Страница 8: ...Product Specifications 2 4 Samsung Electronics 2 3 3 b 18K BTU Front view Rear view 582 787 340 ...
Страница 9: ...2 5 Samsung Electronics 2 4 Pressure Graph 24K BTU 18K BTU ...
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Страница 28: ...4 5 Samsung Electronics MEMO ...
Страница 38: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...
Страница 46: ...6 9 Samsung Electronics MEMO ...
Страница 48: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 Main PCB B B B ...
Страница 51: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit ...
Страница 54: ...Samsung Electronics 10 1 10 Schematic Diagrams 10 1 Indoor Unit PNA4612MOOXD ...