Fan Error (E458, E475) - Samsung AE040JXEDEH Service Manual

Eco outdoor/hydro unit
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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
PCB socket?(CN90, CN91)
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
turn on the power
Is the Pin voltage #1 - #3 of CN90 and 91
over 250V?
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
4-7
Samsung Electronics
Yes
the power
Yes
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
BLUE - BLACK
6-3
ORANGE - BLACK
7-3
No
Follow the check procedure of
outdoor unit power supply error check
No
No
No
Exchange the FAN motor not in rotation
Troubleshooting
Resistance
Remark
over 1M
+300V motor power
1K ~ 2K
+15V control power
200K ~ 300K
control
10K ~ 50K
pulse
10K ~ 50K
reverse
Exchange INVERTER PCB
Exchange INVERTER PCB
# TEST operation #
press K1 or K2 button on the
MAIN PCB after power on.
55

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