Friedrich AS - W126BMS0, Service Manual

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Part 4 Trouble Shooting
Turn on main power.
While the compressor has been stopped, the compressor does not operate
owing to the delaying function for 2 minutes after stopped.
When the compressor stopped Indoor Fan is driven by a low speed.
At this point the wind speed is not controlled by the remote controller.
(When operated in the Sleeping Mode, the wind 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
③
-
⑧
: DC +5V
Check point
• Check the connecting circuit between
MICOM PIN
㉗
and CN-DISP1 PIN
⑦
• Check receiver ass'y
Product doesn't operate with the remote controller.
Trouble 2