Float Switch(Open) - Samsung AC052MNMSEH Service Manual

4-3-3 Float switch(Open)

Wire remote controller display
Symptom
Failure
Error occurs
Remove the floating sensor
connector connected to the indoor unit
PCB and the resistance measured between the
two terminals. Is the resistance ∞?
(open circuit)
Yes
Is the water level in the drain pan high?
Yes
Reset the indoor unit power and
check the operation of the drain pump.
(it vibrates when operating)
Does drain pump operate
when compressor operates?
Yes
Is the water level in
drain pan decreasing?
Yes
Normal operation
Samsung Electronics
E153
2nd Detection of the float switch
Float switch open
No
No
Replace the drain pump
No
Reassemble the floating sensor
connector and reset the outdoor unit
power. (Indoor unit power reset is
required)
Same error occurs again
Yes
Replace the indoor unit PCB
No
Drain pump PCB
Is the terminal voltage around
DC12V?
Yes
Replace the drain pump
• F loat sensor error is cleared only
No
Normal operation
Replace the floating sensor
when it fails and reset the
indoor unit power
No
Replace the indoor unit PCB
when the indoor power is reset
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