Detection Of Floating Switch Of Indoor Unit's Drain Pump - Samsung AM017HN1DEH/EU Service Manual

4-4-14

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

Outdoor unit display
Indoor unit display
Criteria • Refer to the judgment method below.
• Due to the breakdown of a drain pump of the indoor unit, an increase in the water level in the drainage plate
Cause of problem
✳ 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
Samsung Electronics
x x x ( x x x : The address of the error occurred indoor unit)
or defective detection sensor
Replace Drain pump
No
Reassembly Floating Sensor Connector
and reset Outdoor Unit power
(Indoor unit power reset required)
Diagnosed as a defective
Floating sensor
Yes
No
Indoor unit's power reset
after replacement
No
Drain pump PCB unit
voltage = around AC220V?
Yes
No
Replace Drain pump
Troubleshooting
No
Normal operation
Diagnosed as a defective
Floating sensor Indoor unit's
power reset after replacement
No
Replace Indoor Unit PCB
● Float sensor error will be removed
only when the remote controller
for an indoor unit operates
339