Fujitsu AUXB04GALH Service Manual page 138

Trouble shooting 60
OUTDOOR UNIT Error Method:
Coil (Expansion Valve 1 ) Error
Coil (Expansion Valve 2 ) Error
Detective Actuators:
Main PCB
Forecast of Cause :
1. EEV coil lose connection
2. EEV wire(s) cut or pinched
4. Defective EEV coil
3. Main PCB (DC 12V) output abnormal
Check Point 1 : Check the connection of EEV connector
Check If the connector CN 116, CN117 is lose connection or not
OK
Check Point 2 : Check the EEV wire
Check if the wire of EEV has damege or not
(Slash, Braking of wire, Pinching, etc. )
OK
Check Point 3 : Check the EEV Coil
Check if the circuit of EEV coil winding is good or not
(Refer to the "service parts Information 9,10" )
OK
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 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 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.
Indicate or Display:
E.9A.1( E.9A.2)
Outdoor Unit : E. 9A. 1 ( EEV1), E. 9A. 2 ( EEV2)
Indoor Unit
Error Code
Detective details:
When the EEV input on the Main PCB (CN116, CN117) was open circuit or
short circuit.
NG
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 9A
Replace EEV coil
Replace EEV coil
NG
04-68
Replace Main PCB
NG