Samsung AC071MN4PKH Service Manual page 62

4-3-5 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
Indoor unit communication
error
Duplicated address setting
error
No response error address
from indoor unit
Indoor temperature sensor
(open/short error)
Indoor unit Eva In sensor
(Open/Short)
Indoor floating switch
secondary detection
Indoor/outdoor
communication error (1
min)
Communication error
between indoor/outdoor
INV MAIN MICOM (1 min)
Outdoor temperature
sensor error
COND temperature sensor
error
[Inverter] Emission
temperature sensor error
Detection of Indoor
Freezing (when Comp.
Stops)
Protection of Outdoor
Overload (when Comp.
Stops)
Emission temperature
excessively high
High pressure blockage
error
(Refrigerant completely
Leakage error)
Heating operation blocked
Cooling operation blocked
Outdoor fan 1 error
Measure
Check the communication cable of indoor unit.
Check the DC output voltage at the
communication terminal.
Check address setting of Indoor units.
Check indoor unit's quantity setting in outdoor
unit.
Check electriacl connection and setting.
Check indoor unit room temperature sensor.
Check indoor unit PCB connector CN41. (White)
Check indoor unit pipe sensor.
Check indoor PCB connector CN41.(White)
Check indoor unit float sensor.
Check indoor PCB connector CN5. (black)
Check the communication connection between
indoor and outdoor units.
Check the power line and communication cable
connection status
Check MAIN MICOM .
Check INVERTER MICOM.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
Check whether the indoor unit air intake is
blocked.
Check the operation of the indoor fan.
Check sensor connection status.
Check sensor location.
Check sensor resistance.
No error. (DISCHARGE temperature control)
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).
Check the operation setting state.
Check temperature sensor.
Check the operation setting state .
Check temperature senso.
Check input power connection status.
Check the connection status between the motor
and outdoor unit PCB.
Check indoor/outdoor fuse.
4-22
Troubleshooting
Product operation in
error condition
Error type
Outdoor unit/
Compressor/Indoor unit
Communication
Operation Off
Communication
Operation Off
Communication
Operation Off
Indoor sensor
Operation Off
Indoor sensor
Operation Off
Self diagnostic
Operation Off
Communication
Operation Off
Communication
-
Outdoor sensor
Operation Off
Outdoor sensor
Operation Off
Outdoor sensor
Operation Off
Outdoor unit
Operation Off protection
control error
Outdoor unit
Operation Off protection
control error
Outdoor unit
- protection
control error
Self diagnostic
Operation Off
Self diagnostic
Operation Off
Self diagnostic
Operation Off
Self diagnostic
Operation Off
error
error
error
error
error
error
error
error
error
error
error
error
error
error
error