- 51 -
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
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-2422A2L/A3L
Page 12: ... 12 900 1 225 370 2 3 LM 4822C3L LM 4822A3L ...
Page 60: ... 60 3 Display Assembly ...
Page 62: ... 62 1 2 LM 3620C2L LM 3622A2L LM 3620A2L ...
Page 63: ... 63 2 Outdoor 2 1 LM 2422C2L LM 2422A2L ...
Page 64: ... 64 2 2 LM 3625C3L A3L LM 3626A3L ...
Page 65: ... 65 2 3 LM 4822C3L LM 4822A3L ...
Page 81: ...P No 3828A20095K January 2005 Printed in Korea ...