Fan Error (E458, E475) - Samsung AEX160EDEHA Service Manual

Troubleshooting

4-5-4 Fan error (E458, E475)

FAN 1 error(E458), FAN 2 error(E475)
1. Check items
1) Are the input power voltage and power connection correct?
2) Is the motor wire connected to the outdoor PCB correctly?
3) Is there no obstacle at the surrounding of motor and propeller?
4) Does the driver in the motor case broken?
2. Check procedure
Is the connection of FAN housing certainly to
Take each Fan motor housing after 1 minutes
from turning
Is each resistance of FAN cable housing normal?(*)
Mount each Fan housing to PCB socket and
Is the Pin voltage #1 - #3 of CN90 and 91
Is the Pin voltage #5 - #3 of CN90 and 91 15V?
Is the Pin voltage #5 - #3 of CN90 and 91
within 1-6V during the operation?
Is the Fan in rotation during
TEST operation in cooling mode
56
RC160MHXGA_SM_E_34513A(1)_4.indd 56
PCB socket?(CN90, CN91)
Yes
the power
Yes
turn on the power
over 250V?
Yes
Yes
Yes
Yes
Cont.
No
Check the connection of CN90 and CN91
No
Exchange the FAN motor because of driver
inside of the motor case broken
(*)Resistance of FAN cable housing at the normal temperature(10˚C~30˚C)
wire pin number
RED - BLACK 1-3
WHITE - BLACK 4-3
YELLOW - BLACK 5-3 200KΩ ~ 300KΩ
BLUE - BLACK 6-3 10KΩ ~ 50KΩ
ORANGE - BLACK 7-3 10KΩ ~ 50KΩ
No
Follow the check procedure of
outdoor unit power supply error check
No
Exchange INVERTER PCB
No
Exchange INVERTER PCB
No
Exchange the FAN motor not in rotation
Resistance Remark
over 1MΩ +300V motor power
1KΩ ~ 2KΩ +15V control power
control
pulse
reverse
# TEST operation #
press K1 or K2 button on the
MAIN PCB after power on.
Samsung Electronics