Samsung DH052EZM1 - Page 44

43Samsung Electronics
Control Specification & Troubleshooting
5-3-6 Indoor float switching error
No
No
No
No
No
Replace the indoor unit PCB
Replace the drain pump
Replace the drain pump
Replace the indoor unit PCB
Yes
Yes
Yes
Yes
Yes
Yes
Reset the indoor unit power
and check the drain pump operation
Normal operation
Normal operation
Check the floating switch is bad.
Reset the indoor unit
power after replace
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 ?
Does the drain pump operate?
Does the water level decrease?
Is the same error occurred?
Is the terminal voltage
of drain pump PCB about
AC220V?
Re-assembly the floating switch
connector and perform the reset of
outdoor power(Required the reset of
indoor unit power)
❋ Note : E3 error should be released when
indoor unit power is reset.
Outdoor unit display
Indoor unit display
How to determine
Reason of error
Er → E3 (Indoor float switching error )
(Operation) (Timer) (Airflow) (Filter)
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
No
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