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1. Product does not operate at all.
(* Refer to Electronic Control Device drawing and Schematic diagram.)
Electronic Parts Troubleshooting Guide
Turn off Main Power
Turn on Main Power
Does "beeping" sound is made from the Indoor Unit?
Primarily, the operating condition of Micom is OK.
Check the voltage of power(About AC 220V/AC240V, 50Hz)
• Main power's voltage
• Voltage applied to the unit
• Connecting method of Indoor/Outdoor connecting
cable
• Check PWB Ass'y
- Fuse
- Pattern damage
- Varistor(ZNR01J)
Check the connection housing for contacting
• Connector related to CN-POWER
• Display PWB Ass'y Check
• Connector related to CN-TAB1,
Compressor (LM-2163C2L/M)
Check each load(Indoor/Outdoor Fan Motor,
Compressor, Stepping Motor etc.) and contacting
condition of related connector
PCB Board Operation Check
Items
• Power Transformer
(Outdoor unit)
- Input Voltage
- Output Voltage
• IC01D(7812) Output
(Indoor/Outdoor unit)
• IC02D(7805) Output
(Indoor/Outdoor unit)
• IC01A(KIA7036, Reset IC)
X01(8MHz)
• Replace Trans
• Replace IC01D
• Replace IC02D
• Replace faulty parts
- About AC220V/240V±10% - Check the power voltage
- About AC14±3V
• DC +12V
• DC +5V
• Voltage of Micom No. 2,
(DC +4.5V over) and Soldering condition.
Content
Remedy
NO
YES
(After 10 seconds)
Summary of Contents for LM-2561C3L
Page 12: ... 12 LM 4260H3L M 900 1 225 370 ...
Page 57: ... 57 Electronic Control Device 1 Indoor MAIN P C B ASM ...
Page 58: ... 58 2 Outdoor MAIN P C B ASM LM 2561C3L LM 4260H3L M ...
Page 59: ... 59 MAIN P C B ASM LM 2860C5L LM 3060H4L M ...
Page 60: ... 60 3 Display Ass y ...
Page 61: ... 61 Schematic Diagram 1 Indoor LM 2561C3L LM 2860C5L LM 3060H4L M LM 4260H3L M ...
Page 62: ... 62 2 Outdoor LM 2561C3L LM 4260H3L M ...
Page 63: ... 63 LM 2860C5L LM 3060H4L M ...
Page 82: ...P No 3828A20023R January 2001 Printed in Korea ...