Sequence Of Trouble Shooting For Inverter Aircon - Samsung AQV12F2VE Service Manual

5-3 Sequence of trouble shooting for inverter aircon

OPERTION START
. The indoor unit does not work
even though the power is plugged.
. There is no sound "ting"
. The lamp is not on the display.
The indoor unit does not work when
operated by the remocon.
The lamp of the indoor display lamp is
flickering and the indoor unit stops sev-
eral minutes after the indoor unit starts.
Reservation lamp(
Operation( ), Reservation(
Fan( ) lamp flickering
Reservation( ), Fan(
Operation( ), Fan (
Turbo lamp( ) flickering
Reservation( ), Turbo(
flickering
Fan( ), Turbo lamp(
5-4
Check the indoor unit control board. (A)
Check the control board and the display
board of indoor unit.(C)
Check the error mode by confirming the
lamp flickering of indoor unit display.(D~N)
) flickering -> Check of the indoor temperature sensor (D)
) lamp flickering -> Check of the indoor heat exchanger (E)
-> Check of indoor unit fan motor (F)
) lamp flickering -> Check the lines of the indoor and outdoor
) lamp flickering -> Check of the outdoor unit temperature sensor
: Discharge temperature sensor (H)
: Comp top OLP temperature sensor (I)
: Defrost temperature sensor (J)
: Outdoor temperature sensor (K)
-> Check of the abnormal increase protection
of the operation Current (L)
) lamp -> Check of the instantaneous over-current protection
mode of inverter circuit (M)
) flickering -> Check the abnormal increase of the comp top and
discharge gas temperature protection mode.(N)
Checking the Remocon. (B)
communication (G)
Check the indoor unit
Check of the
Communication line
Check of the Outdoor unit
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