Samsung AR18CSFCMWKN - 4-6-3 Checking Outdoor Controller

Troubleshooting
4-46 Samsung Electronics
SAMSUNG PROPRIETARY. DO NOT COPY OR DISTRIBUTE WITHOUT PERMISSION
SAMSUNG PROPRIETARY. DO NOT COPY OR DISTRIBUTE WITHOUT PERMISSION
4-6-3 Checking Outdoor Controller
1. Making sure the wire connections.
2. Checking AC(220~240V) line
Caution!
When you remove PBA, you have to check DC link Voltage. After Power off, DC link Voltage is so high!
3. Checking DC voltage on each point
4. Checking PFCM
Check Resistance between R and S
AJ***CXS*CH, AJ036BXJ4CH, AJ048BXJ5CH (MAIN PCB)
Item Measuring point Nomal value
12V CE101Voltage 10.8V - 13.2V
5V CE105 Voltage 4.75V - 5.25V
AJ***CXS*CH, AJ036BXJ4CH, AJ048BXJ5CH (INVERTER PCB)
Item Measuring point Nomal value
DC LINK CE151 Voltage AC220V → 305~310Vdc
Main control 15V CE158 Voltage 14.5V - 15.5V
Main control 12V CE157 Voltage 10.8V - 13.2V
Main control 5V CE159 Voltage 4.75V - 5.25V
AJ020BXJ2CH, AJ024BXJ3CH (INVERTER PBA)
Item Measuring point Nomal value
DC LINK CE151 Voltage AC220V → 305~310Vdc
Main control 15V CE161 Voltage 14.5V - 15.5V
Main control 12V CE175 Voltage 10.8V - 13.2V
Main control 5V CE174 Voltage 4.75V - 5.25V
AJ***CXS*CH, AJ036BXJ4CH, AJ048BXJ5CH (INVERTER PBA)AJ020BXJ2CH, AJ024BXJ3CH
Measuring point Normal value
Resistance R - S over the hundreds
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PFCMPFCM
RR SS
RR SS