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3-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
9
1)
Checklist :
(1) Is the indoor unit fan motor properly connected with the connector (CN72)?
(2) Is the AC voltage correct?
(3) Is HALL IC in indoor fan motor properly connected with the connector (CN42)?
(4) Is the running capacitor (CR71) properly connected with PCB board?
2)
Troubleshooting procedure
After unplugging out the power cord should
be reconnected within five seconds.
Does the STD lamp(Green) blink?
Does the Solid State Relay(SS71) work
properly?
Is the supply voltage of the fan
motor sufficient?
Test rod location
PCB CN72
Condition
Fan operate
about AC 180V
Normal
voltage
pin #3 and #5
YES
YES
YES
NO
NO
NO
Check as in the procedure “NO power parts” Refer tp
page 8.
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
DB98-05495A(1)-1 3/21/02 4:27 PM Page 9
Index
Содержание AS12AAMC
Страница 23: ...22 6 Wiring Diagrams 6 1 Indoor Unit DB98 05495A 1 2 3 21 02 4 28 PM Page 22 Index ...
Страница 25: ...7 Schematic Diagrams 7 1 Indoor Unit AS07A5 6 MA AS09A5 6 MA 24 Index ...
Страница 26: ...25 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 26 Index ...
Страница 27: ...26 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 27 Index ...
Страница 28: ...27 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 28 Index ...
Страница 29: ...28 MEMO DB98 05495A 1 2 3 21 02 4 29 PM Page 29 Index ...
Страница 30: ...ELECTRONICS Printed in Korea DB98 05495A 1 co 3 21 02 4 27 PM Page 2 Index ...