AirStage AO54FJ, Service Manual

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Trouble shooting 8
INDOOR UNIT INDOOR UNIT Error Method: Error Method:
DRAIN ABNORMAL
Detective Actuators: Detective Actuators:
Circuitry in indoor unit Control PCB
& Float Switch
Detective details: Detective details:
When Float switch is kept ON for more 3 minutes.
Forecast of Cause Forecast of Cause:
1. Float switch defective
2. Connector / Cable shorted
3. Control PCB defective
Check Point 2 : Check Connector(CN15:AU25 type) / Wiring Check Point 2 : Check Connector(CN15:AU25 type) / Wiring
Check if CN15 has a defective contact or shorted wiring.
If wire is abnormal, replace the float switch.
Check Point 3 : Check Control PCB Check Point 3 : Check Control PCB
Check Point 1 : Check Float SW Check Point 1 : Check Float SW
Check the float switch operation if it is caught by drip or a stop
Remove the float switch and check ON / OFF switching function by detective with a mater.
If the float switch is defective replace it.
If above Check 1,2 do not solve the problem, replace Control
PCB and set up the original address.
ON ON OFF OFF
Indicate or Display: Indicate or Display:
Indoor Unit : Operation LED 4 Times Blink 4 Times Blink , , Timer LED Flash Flash
Swing LED OFF OFF
Outdoor Unit : LED1 Flash, LED6
1 8TIMES Blink (Indoor Unit address)
ERROR CODE : E:11 E:11
06-13