Samsung AC026RN1DKG, Service Manual

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Troubleshooting
4-18 Samsung Electronics
4-2-5 Wired remote controller
- If an error occurs, ( ) icon will be displayed on the wired remote controller.
- Press the Test button to see the error code.
Error
mode
Contents Measure
Product operation in
error condition
Error type
Outdoor unit/
Compressor/Indoor unit
Indoor unit communication
error
Check the communication cable of indoor unit.
Check the DC output voltage at the communication
terminal.
Operation Off
Communication
error
Duplicated address setting
error
Check address setting of Indoor units. Operation Off
Communication
error
No response error address
from indoor unit
Check indoor unit's quantity setting in outdoor unit.
Check electrical connection and setting.
Operation Off
Communication
error
Indoor temperature sensor
(open/short error)
Check indoor unit room temperature sensor.
Check indoor unit PCB connector CN41. (White)
Operation Off
Indoor sensor
error
Indoor unit Eva In sensor
(Open/Short)
Check indoor unit pipe sensor.
Check indoor PCB connector CN41.(White)
Operation Off
Indoor sensor
error
Indoor floating switch
secondary detection
Check indoor unit float sensor.
Check indoor PCB connector CN5. (Black)
Operation Off
Self diagnostic
error
Indoor/outdoor
communication error (1 min)
Check the communication connection between
indoor and outdoor units.
Check the power line and communication cable
connection status
Operation Off
Communication
error
Communication error
between indoor/outdoor
INV ↔ MAIN MICOM (1 min)
Check MAIN MICOM.
Check INVERTER MICOM.
-
Communication
error
Outdoor temperature sensor
error
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Outdoor sensor
error
COND temperature sensor
error
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Outdoor sensor
error
[Inverter] Emission
temperature sensor error
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Outdoor sensor
error
Detection of Indoor Freezing
(when Comp. Stops)
Check whether the indoor unit air intake is blocked.
Check the operation of the indoor fan.
Operation Off
Outdoor unit
protection
control error
Protection of Outdoor
Overload (when Comp. Stops)
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Operation Off
Outdoor unit
protection
control error
High Pressure Switch Error
or High Pressure Switch
Connector Open
Check Comp Pressure
Check the Connection of the CN003 on the MAIN-
OUT PBA
(Error that only covers an outdoor unit capacity of 7.1
KW or less)
Outdoor Operation Off
Outdoor Unit
Protection
Control Error
Emission temperature
excessively high
No error. (DISCHARGE temperature control) -
Outdoor unit
protection
control error
High pressure blockage error
(Refrigerant completely
Leakage error)
Check whether the outdoor unit service valve is
open.
Check the connection of the pipes.
Check the operation of the EEV.
Check for refrigerant leakage. (Completely leakage).
Operation Off
Self diagnostic
error