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Old 19-06-2020, 01:27 AM   #2
Join Date: Jan 2000
Posts: 221
Flashing light simply means aircon got problem but actual problem will either be indicated by some LED error code on the controller board on the external compressor unit or some error code on the remote control depending on the aircon model.

Common problem is the aircon thermistor sensor going bad. The part is very cheap but labour to change it may cost 100-200+ depending on the honesty and experience of the technician.
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