Detection Of Floating Switch Of Indoor Unit's Drain Pump - Samsung AM032MNQDCH/AA Service Manual

Troubleshooting
4-4-12

: Detection of Floating Switch of Indoor Unit's Drain Pump

Outdoor unit display
Indoor unit display ×(Operation)
Criteria • Refer to how to determine below
• Due to the breakdown of a drain pump of the indoor unit, an increase in the water level in the drainage
Cause of problem
plate or defective detection sensor
S To release E153 error, you must reset the power of the indoor unit.
1. How to check
Error occurs
When checking the
resistance value of both terminals after
disconnecting a floating sensor connector linked
to an indoor unit PCB, is resistance
valve = ∞ ?
Yes
Is there a lot of water in the drain plate?
Yes
Reset the power of the indoor unit
then check if drain pump operates
(vibrates during operation)
Does Drain pump run
during COMP operation?
Yes
Does the water level
in the Drain Pan get lower?
Yes
Normal operation
4-56
x x x ( x x x : The address of the error occurred indoor unit)
×(Timer) ◑(Fan) ◑(Filter)
No
Reassembly Floating Sensor Connector
and reset Outdoor Unit power
(Indoor unit power reset required)
Diagnosed as a defective
No
Indoor unit's power reset
No
Drain pump PCB unit
voltage = around AC220V?
No
Replace Drain pump
Replace Drain pump
×(Defrost)
Floating sensor
Yes
after replacement
Floating sensor Indoor unit's
power reset after replacement
Yes
Float sensor error will be removed
only when the remote controller
for an indoor unit operates
No
Normal operation
Diagnosed as a defective
No
Replace Indoor Unit PCB
Samsung Electronics