Coil 1 (Expansion valve ) Error
OK
OK
4. Controller PCB (DC 12V) output abnormal 5. Noise momentary open, voltage drop
Indoor unit controller PCB
When the EEV1 drive circuit is open circuit
Check Point 1 : Check the connection of EEV1 connector
Check if the wire of EEV 1has damege or not
(Slash, Braking of wire, Pinching, etc. )
Check Point 4 : Check the output of EEV1 on the Main PCB
Check Point 2 : Check the EEV1 wire
Check If the connector CN 10 is lose connection or not
Indoor Unit : Operation LED 5 times Flash, Timer LED 2 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E.5U.1
Error Code : 5 2
1. EEV1 coil lose connection 2. EEV1 wire(s) cut or pinched 3. Defective EEV1 coil
Trouble shooting 25 E52. 1
Indicate or Display:
Detective Actuators:
Detective details:
INDOOR UNIT Error Method:
Forecast of Cause :
Check if the DC 12 is on between the pin No. 1 of CN10 and Pin No.6 of CNB01 (GND)
( Disconnect the wire of EEV1 when you check the output of EEV1 )
OK
Check if the circuit of EEV coil winding is good or not
(Refer to the service parts Information 15 )
Check Point 3 : Check the EEV1 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 EEV1 coil
NG
Replace EEV1 coil
NG
Replace Min PCB
NG
04-34
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