AirStage ARXB07LALH, Service Manual

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Coil EEV1 Error
Coil EEV2 Error
OK
OK
2. EEV wire(s) cut or pinched
3. Main PCB (DC 12V) output abnormal
4. Defective EEV coil
Main PCB
When the EEV input on the Main PCB (CN116, CN117) was open circuit or
short circuit.
Check Point 1 : Check the connection of EEV connector
Check if the wire of EEV has damege or not
(Slash, Braking of wire, Pinching, etc. )
Check Point 4 : Check the output of EEV on the Main PCB
Check if there is a short circuit of CN116 CN117 on the Main PCB or not
Check Point 2 : Check the EEV wire
Check If the connector CN 116, CN117 is lose connection or not
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 9A. 1 ( EEV1), E. 9A. 2 ( EEV2)
Error Code : 9A
04-50
1. EEV coil lose connection
Trouble shooting 40
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
Check if the DC 12 is on between the pin No. 1 of CN116/CN117 and Pin No.2 of CN132 (GND)
( Disconnect the wire of EEV when you check the output of EEV )
OK
Check if the circuit of EEV coil winding is good or not
(Refer to the service parts Information )
Check Point 3 : Check the EEV Coil
Check Point 5 : Noise, momentary open, voltage drop
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related cables near the power line.
OK
Replace EEV coil
NG
Replace EEV coil
NG
Replace Main PCB
NG