Samsung DH094EAM Service Manual page 30

5-3-6 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 operate?
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
AC220V?
Yes
Replace the drain pump
❋ Note : E3 error should be released when
Control Specification & Troubleshooting
No
Normal operation
Check the floating switch is bad.
Reset the indoor unit
power after replace
No
Replace the indoor unit PCB
indoor unit power is reset.
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