Samsung MC26AC2X Service Manual download pdf (Page 29)

Samsung Electronics5-4

Troubleshooting

5-2-3 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)

1) Checklist :

(1) Is the indoor unit fan motor properly connected with the connector (CN72)?

(2) Is the AC voltage correct?

(3) Is HALL IC in indoor fan motor properly connected with the connector (CN42)?

(4) Is the running capacitor (CR71) properly connected with PCB board?

2) Troubleshooting procedure

After unplugging out the power cord should

be reconnected within five seconds.

Does the STD lamp(Green) blink?

Does the Solid State Relay(SS71) work

properly?

Is the supply voltage of the fan

motor sufficient?

Test rod location

PCB CN72 Condition

Fan operate about AC 180V

Normal

voltage

pin #3 and #5

YES

Check as in the procedure “NO power parts”

Refer to page 5-2.

Microcomputer is out of order.

PCB is

out of order.

PCB should be replaced.

Replace MFC

Fan motor

should be replaced.

Fan motor

is out of order.

MF-C is out of order

YES

Test rod location

SS71- SS71- 12V

Normal

Voltage

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Samsung MC26AC2X Service Manual Page 29