Service Manual

Indoor Unit A, B, C, EEV control error
(CN305 / 306 / 307)
Branch Box Controller PCB
EEV
Indoor Unit : Operation LED 13times Flash, Timer LED 2times Flash,
Economy LED Flashing (0.1s ON / 0.1s OFF)
Outdoor Unit : E. J2. U
Branch Box : LED402 8times Flash
(Indoor unit A): LED403 Lit, LED404/ 405 Unlit
(Indoor unit B): LED403 Unlit, LED404 Lit, LED405 Unlit
(Indoor unit C): LED403/ 404 Unlit, LED405 Lit
Error Code : J2
02-61
Trouble shooting 44
Indicate or Display:
Detective Actuators:
Detective details:
Branch Box Error Method:
Forecast of Cause :
1. Connection failure 2. EEV failure 3. Controller PCB failure
OK
OK
OK
Check Point 2 : Check Coil of EEV
Remove connector, check each winding resistance of Coil.
If Resistance value is abnormal, replace EEV.
Read wire
46
± 4
Resistance value (68°F)
Check Point 1 : Check Connections
Check Connectors (Loose connector or open cable.)
Check Point 3 : Check Voltage from Controller PCB
Remove Connector and check Voltage (DC12V).
>> If it does not appear, replace Controller PCB.
DC
White - Red
Orange - Red
Yellow - Red
Blue - Red
In cooling or dry operation, when the Indoor unit heat exchanger temperature
becomes lower than 3degC for 5minutes,the compressor stops and
EEV is initialized.
After the compressor restarts, if the same protection is repeated within
1hr, the compressor stops permanently.