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
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 (20°C)
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 3°C 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.
02-60
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