Samsung mini DVM Series, Service Manual

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Troubleshooting
Samsung Electronics 12-58
■
( for 1 st Detection) Detection of Floating Switch of Indoor Unit Drain Pump
✳
error is removed when the indoor unit power is reset.
1. Check Method
Outdoor unit display
1 st detection : (Display only outdoor unit)
2 nd detection:
↔
A*** (*** : Indoor unit address which an error is occurred)
Indoor unit display (Operation) (Timer) (Fan) (Filter) (Defrost)
Judgment method Refer to the below judgment method
Causes
Rise of the water level of the drain plate according to the indoor unit drain pump break or detec-
tion sensor defect
Solve the problem by referring the
drain pump (optional)
It causes by plot switch defect ;
thus, replace it and reset the indoor
unit power.
Is the same error
occurred again?
Replace the indoor unit PCB.
Normally operated.
Reassemble the plot switch
connector and reset the indoor
and outdoor unit power.
Is the indoor unit that the error is
occurred cassette type?
Is the amount of water
which is gathered into the
drain plate much?
Is the drain pump operated?
Is the terminal voltage
of the drain pump PCB approximately
AC 220V?
Replace the indoor unit
PCB.
Replace the drain pump.
Replace the drain pump. Normally operated.
Is the water level of the drain plate lowered?
Reset the indoor unit power
and check whether the drain
pump is operated normally or not.
Is the resistance value?
when measuring the resistance
value on both sides after removing the plot
switch connector that connects to the
indoor unit PCB?
(OPEN status)
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes