Samsung IDH4400A, Руководство по обслуживанию, Страница: 47 / 79

4-20 Samsung Electronics
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EC16 : When the trouble is found on the part related to ventilator of indoor unit.
Check and replace IC01, IC02
NO
YES
YES
Put off and then reset the power
Replace micom
Check and replace IC06
Check and replace RY77
Replace indoor unit PCB
NO
NO
NO
NO
NO
Is the option switch 1 of indoor unit off?
Is the voltage across RY77 normal?
Check and replace ventilator
Is the voltage of CN6 no.1 and 3 of indoor unit
AC220V~AC240V?
Is the output DC112V, DC5V normal?
Is the wire correctly connected between indoor unit and outdoor unit?
after check of shot circuit between indoor unit and ventilator wire, start the wind control and check the
indoor fan and then start the test.
Is IC06 pin no. 10 “LOW”?
Check point :
- Indoor unit PCB
↔
ventilator connector wire, output voltage of indoor unit micom pin No. 5
- Ventilator, DC 12V power, DC5V power, indoor unit option switch.
Is IC06 pin no. 7 “HIGH”?
YES
YES
YES
YES
Trouble Shooting
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