-91-
Electronic Parts Troubleshooting Guide
❇
Refer to electronic contorol device drawing & schematic diagram.
The Product doesn’t operate at all.
Turn off the main power and wait to 5 seconds
Turn on the main power again.
Does "Beeping" sound is made from the indoor unit?
• Primarily, the operating condi-
tion of Micom is O.K.
• Check CN-DISP1
Check the voltage of power(AC220V/AC240V, 50Hz).
• The voltage of main power.
• The voltage applied to the unit.
• The connecting method of Indoor/Outdoor connecting cable (each color)
• The P.W.B. Ass'y
(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)
Trouble 1
NO
YES
The operation check of the P.C.B. Ass'y
Procedure
1) The input voltage of power trans-
former.
2) The output voltage of power
transformer.
3) IC01D(7812)
4) IC02D(7805)
5) IC01A(KIA7036)
Specification
1) AC230V ± 30V
: Check the rated voltage
2) 14V ± 3V
3) DC12V
4) DC5V
5) The voltage of micom pin 29
: DC4.5V
↑
Remedy
1) Replace
power transfomer.
2) Replace
power transfomer.
3) Replace IC01D.
4) Replace IC02D.
5) Replace IC01A.
Содержание A2UN186FA0
Страница 104: ... 104 Electronic Control Device 1 Room Type Indoor Unit MAIN P C B DC ASM MAIN P C B AC ASM ...
Страница 105: ... 105 2 Cassette Type Indoor Unit MAIN P C B DC ASM ...
Страница 106: ... 106 3 Art Cool Type Indoor Unit TOP VIEW BOTTOM VIEW ...
Страница 107: ... 107 4 Convertible Type Indoor Unit ...
Страница 108: ... 108 5 Display ASSY Room Type Indoor Unit Convertible Type Indoor Unit Art Cool Type Indoor Unit TOP VIEW BOTTOM VIEW ...
Страница 109: ... 109 6 SUB P W B ASSEMBLY Art Cool Type Indoor Unit TOP VIEW BOTTOM VIEW ...
Страница 110: ... 110 7 Outdoor Unit MAIN P C B ASM V P U N W ...
Страница 111: ... 111 Schematic Diagram 1 Room Type Indoor Unit ...
Страница 113: ... 113 3 Art Cool Type Indoor Unit ...
Страница 114: ... 114 4 Convertible Type Indoor Unit RY 4WAY RY OUTFAN ...
Страница 120: ... 120 354212 249951 268714 266012 352114 263230 352118 330870 158591 3 Cassette Type Indoor Unit AMNN126EA0 AMNN186TEA0 ...
Страница 121: ... 121 346810 130411 359011 152312 135802 135312 2 W0CZZ 137211 267110 352150 352150 130911 140570 268712 146811 ...
Страница 132: ...P No 3828A20097N August 2003 Printed in Korea ...