Fujitsu Inverter Halcyon ASU12RMLQ, Service Instruction

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Check Point 2 :
Check Point 2 : Check Connector (CN9) / Wire
Check Point 1 : Check Float Switch
Check Point 3 : Replace Main PCB
ON ON OFF OFF
OK OK
OK OK
Trouble shooting 6
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators: Detective details:
Forecast of Cause :
Water Drain Abnormal
Indoor Unit Main PCB Circuit
Float Switch
When Float Switch is ON for more than 3 minutes.
1. Float Switch failure 2. Shorted connector/ wire 3. Main PCB failure
Check operation of float switch. (any blocking by dust, etc.)
Remove Float switch and check ON/OFF switching operation
by using a meter.
>>If Float switch is detective, replace it.
Check loose contact of CN9 /shorted wire (pinched wire).
>>Replace Float switch if the wire is abnormal
If Check Point 1 & 2 do not improve the symptom, change Controller PCB.
02-13
Refer to error code table.