Outdoor Unit Fan Error (Error Code : E458, E475) - Samsung AC009BNLDCH Service Manual

4-4-14. Outdoor unit Fan error (Error Code : E458, E475)

Outdoor Unit display
Wired remote Control, Wind Free RAC
Duct, 1way Cassette
Display
Duct
Blue Red
1way
Blue Yellow
X X
Judgment
Refer to checking method, as shown below.
method
Symtom
Make sure to check after power Off!
Check the connection of
the fan connectors (CN90, CN91 or CN901).
1. Is the outdoor fan connector correctly connected?
2. Are the wires of the outdoor fan connector
correctly connected?
Check the outdoor unit
Inverter PCB fan connector voltage
→ After power is on, check the voltagebetween connector pins.
1. Is the DC_Link voltage correct? (Normal: 280Vdc ≤ DC_Link voltage ≤ 360Vdc)
2. Is the fan control voltage correct? (Normal: 14Vdc ≤ FAN control voltage ≤ 16Vdc)
3. Is the fan command voltage?
(Normal: 2Vdc ≤FAN command voltage ≤ 5Vdc)
Check the single parts of Fan Motor.
(Be sure to turn off the power and check after30 seconds!)
1. Are the resistance values between pins of the fan motor
connector similar to those in the following table?
Checking normal operation
※ At least 30 seconds after power is OFF, attach/detach the fan motor connector!
→ Threatened to cause secondary damage to the motor and the PCB.
※ Check the Inverter PCB or Fan Motor single parts and only if there is a fault, replace!
※ Do not replace the Main PCB of the outdoor unit relating to the fault in the Fan Motor!
→ If the error is indicated on 7-segment of the Main PCB of the outdoor unit, the Main PCB of the outdoor unit has no fault.
→ In case of a control problem, it is possible to solve with S/W update.
Samsung Electronics
E458, E475
E458, E475
4way Cassette,
4way Cassette(600x600)
or
or
or
◑ ◑ ◑ ◑
X
Yes
Yes
Yes
MAX4
◑ ◑ ◑ ◑ ◑
●
Connect the fan connectors (CN90, CN91 or CN901)
No
correctly. → Power on. → After checking normal
operation, end the service.
Check the power connection of the Inverter PCB of the
outdoor unit.
1. Check by referring to When the outdoor unit power
is not ON - Initial Diagnosis. → Check everything is
normal after replacing the PCB at the fault in the
No
Inverter PCB. → End the service.
1 1 3 3 4 4
#1-#3 DC_Link Voltage (between DC_link and GND)
#4-#3 DC_Link voltage (between DC15V and GND)
#5-#3 FAN command voltage (between fan control and GND)
Measuring Part
1 3 3 4 4 5 5 6 6 1
Motor Connector
Troubleshooting
Console 360 Cassette
BLUE ◑
◑ ◑
X X
5 5 6 6
Diagnosing Part Value of good product
#5(YEL)-#3(BLK) resistance
(between fan control and Open (infinite resistance)
GND)
#4(WHT)-#3(BLK) resistance
Approx. 1.0kΩ ~ 3kΩ
(between DC15V and GND)
#5(YEL)-#3(BLK) resistance
(between fan control and Approx. 230kΩ ~ 280kΩ
GND)
#6(BLU)-#3(BLK) resistance Some MΩ or more or open
(between feedback and GND) (infinite resistance value)
280Vdc ~ 360Vdc
14Vdc ~ 16Vdc
2Vdc ~ 5Vdc
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