Trouble shooting 26 E53. 1
INDOOR UNIT Error Method:
Indoor unit Drain pump Error
Indicate or Display:
Indoor Unit : Operation LED 5 times Flash, Timer LED 3 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E.5 U.1
Error Code : 5 3
Detective Actuators:
Indoor Unit Controller PCB Circuit
Float Switch
Detective details:
When Float switch is ON for more than 3 minutes.
Check Point 3, 4 : Check Float Switch operation, connecting wire shorted.
Check operation of float switch.
Remove Float switch and check ON/OFF switching operation
by using a meter.
>>If Float switch is defective, replace it.
ON OFF
OK
Forecast of Cause : 1. Drain Installation 2. Drain pipe line blockage 3. Float switch defective 4. Shorted connector/wire
5. Controller PCB defective / Drain pump defective
Check Point 5 : Check controller PCB defective / Drain pump defective
Check Point 1 : Check Drain pipe installation
OK
Check Drain pipe installation (Refer to the installaion manual)
The Height limit for Drain pump, The angle of drain pipe, The angle of indoor unit
Check Point 2 : Check Drain pipe blockage
OK
Check Drain pipe line blockage
The drain pump inlet and outlet, The connecting pipe, The drain pipe outlet
Measure power supply (AC208- 230V) for the drain pump on the Power supply PCB (CN106) at the Float SW ON states.
>>If No voltage on the connector, replace the power supply PCB
>>If AC208- 230V on the connector, replace the Drain pump
04-35
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