Troubleshooting; Indoor Display Error And Check Method; Indoor Unit Led Display At Error Detecting - Samsung AC048KXQPCC Service Manual

4. Troubleshooting

4-1 Indoor Display Error and Check Method

4-1-1 Indoor unit LED display at error detecting

- Thins to check before diagnosis
Display
Indoor and Outdoor unit
communication Error
Indoor unit room
temperature sensor
Indoor unit Eva_in sensor
Fan motor Error
EEPROM ERROR
EEPROM Option
Thermal Fuse Error
(TERMINAL BLOCK)
Duplicated address
No response error of
address from indoor unit
Samsung Electronics
Explanation
● Check the connection wire.
● Change the Main PCB.
● Change the temperature sensor.
(Wire type)
SHORT/OPEN
● Change the temperature sensor.
SHORT/OPEN (Wire type)
● Check the connection wire.
● Change the Fan motor.
● Change the Main PCB.
※ BLDC Motor is used as Fan Motor,
Indoor unit
therefore if you connect or disconnect
the connector while the power is still
on, it may get damaged. Make sure to
turn off the power before performing
any operation.
● Change PCB.
● Input option.
Setting Error - Cannot input KEY
● Check the connection wire.
● Check address setting of Indoor units.
setting error
● Check indoor unit's quantity setting
in outdoor unit.
● Check electrical connection and set-
ting.
Check list
Indoor
Operation
Operation
Operation
Operation
Operation
Operation
Operation
Operation
Operation
Product operation
Outdoor
COMP
FAN FAN
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Operation Operation
OFF OFF OFF
Diagnosis
Method
4-1