Samsung GH052EAM Service Manual page 26

4-4-6 Indoor float switching error
Outdoor unit display
Indoor unit display
How to determine
Reason of error
Is the resistance value ∞
when measuring the resistance value
of two terminal after taking out the floating
switch connector connected to indoor
unit PCB? (Open status)
Is much the water of drain pan ?
Reset the indoor unit power
and check the drain pump operation
Does the drain pump operat?
Does the water level decrease?
Normal operation
Samsung Electronics
Er → E3 (Indoor float switching error )
(Operation) (Timer)
The status continues over 1 minute that indoor unit float switch is opened.
The rising of water level of drain pan due to the disorder of indoor unit drain pump,
the badness of detection sensor
Yes
Yes
No
Yes
No
Yes
Replace the drain pump
(Airflow) (Filter)
No
Re-assembly the floating switch
connector and perform the reset of
outdoor power(Required the reset of
indoor unit power)
Is the same error occurred?
Yes
Replace the indoor unit PCB
No
Is the terminal voltage
of drain pump PCB about
AC 220V?
Yes
Replace the drain pump
Note : E3 error should be released when
Troubleshooting
No
Normal operation
Check the floating switch bad.
Reset the indoor unit
power after replce
No
Replace the indoor unit PCB
indoor unit power is reset.
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