OK
NG
OK
OK
NG
1. EEV2 coil loose connection 2. EEV2 wires cut or pinched.
3. Defective EEV2 coil 4. Main PCB (DC12V) output abnormal
Main PCB
Check Point 1 : Check the connection of EEV connector
Check if the connector CN117 is loose connection or not.
Check Point 2 : Check the EEV wire
Check if the wire of EEV2 has damage or not.
(Slash, Braking of wire, Pinching, etc.)
Replace EEV2 Coil
Check Point 4 : Check the output of EEV on the Main PCB
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 9 A. 2
Error Code : 9 U / 9A
Coil 2 (EEV) Error
Trouble shooting 58 E9A.2
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
Coil 2(Expansion valve 2) driver circuit open detected.
Check if the DC12V is on between the Pin No.1 of CN117 and Pin No.2 of CN132 (GND).
(Disconnect the wire of EEV2 when you check the output of EEV2)
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
NG
Check Point 3 : Check the EEV Coil
Check if the circuit of EEV2 coil winding is good or not.
(Refer to the service parts information 16.)
Replace EEV2 Coil
Replace Main PCB
04-67
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