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Samsung TH060EAV Service Manual page 122

System air conditioner
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12-2-4 The Outdoor unit Fan error
1. Checklist :
1) Are the input power voltage and the power connection correct?
2) Is the motor wire connected to the outdoor PCB correctly?
3) Is there no assembly error or none-assembly in the terminal of motor wire connector?
4) Is there no obstacle at the surrounding of motor and propeller?
2. Troubleshooting procedure
Is the Pin voltage of CN01
#1, #3 over 250V?
Is the Pin voltage of CN01 #3, #5
within 1V~5V during the operation?
Is the Pin voltage of CN01 #6 changed
during the operation? (Square-Wave)
Exchange the PCB.
Samsung Electronics
No
Yes
No
Yes
No
Yes
Follow the Check Procedure of
outdoor unit power supply error check.
Does the Pin voltage of IC01 (MICOM)
No.13 change? (Square-Wave)
Yes
FAN DRIVE CIRCUIT
(Q901,Q902 etc.) error
Exchange the PCB.
Pull out the power cord and
execute the following step after 30 seconds.
Disassemble the BLDC FAN Wire.
Is the short between
the BLDC FAN Wires?
Yes
Exchange the BLDC FAN MOTOR.
Troubleshooting
No
Exchange the PCB.
MICOM Error
No
Exchange the PCB.
12-5

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