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Only for training and service purposes
Part 4 Trouble Shooting
Turn on main power.
Wait 2 minutes for the compressor to turn on.
When the compressor is stopped stopped, the Indoor Fan is driven by a low speed.
At this point the air speed is not controlled by the remote controller.
(When operated in the Sleeping Mode, the air speed is set to the low speed as force).)
Caused by the remote controller.
Caused by other parts except
the remote controller
When the mark ( ) is displayed in LCD
screen, replace battery.
Check the contact of CN-DISP 1, 2 connector
Check DISP P.C.B Ass'y
-Voltage between CN-DISP1 - : DC +5V
Check point
• Check the connecting circuit between
MICOM PIN and CN-DISP1 PIN
• Check receiver ass'y
Product doesn't operate with the remote controller. (9~30kBtu/h Model)
Trouble 2