Troubleshooting - Samsung UH070CAV1 Installation Manual

Troubleshooting

The table below give indication about self diagnostic routine. Some of error code requires activities exclusively
for Authorized Service Center.
Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Display
Indoor unit Communication
Error
Communication time-out
error between indoor/out-
door unit 6-packet over error
Indoor temperature sensor
(open/short error)
Indoor unit Eva In sensor
(open/short)
Dismount of indoor unit Eva
In sensor
Secondary detection of
indoor floating switch
Indoor unit not connected
1min. Time out Comm.
(Display Board : Onboard :
Indoor
Communication error
between indoor/outdoor
unit INV and Main Micom (1
min.)
Outdoor temperature sensor
error
Outdoor temperature sensor
error
[inverter] Emission tempera-
ture sensor error
Excessive temperature emis-
sion
Power cable connection
error
24
E-
Content
Check the communication line for
indoor units, check the power supply
of the communication phase (DC)
Check the communication line for
indoor units, check the power supply
of the communication phase (DC)
Check the temp. sensor of the indoor
unit room. Check the indoor PCB con-
nector CN21(white)
Check the indoor unit drainage pipe
sensor.Check the indoor PCB connec-
tor CN21 (white)
Check the drainage pipe has been dis-
mounted
Check the indoor unit's float sensor-
Check the indoor PCB connector CN51
(black)
Check the indoor unit connection.
Check the indoor unit option
Check the indoor unit connection
Check the indoor unit option
Outdoor)
Check the Main MICOM.Check the
inverter MICOM
Outdoor temperature sensor error
Check the connection status of the
sensorCheck the sensor locationCheck
the resistance values of sensor
Check the connection status of the
sensorCheck the sensor locationCheck
the resistance values of sensor
Not an error (discharge temp. control)
Check the status of power connection
Product operation status
in case of error
Measure
Outdoor unit compressor/
Outdoor unit fan
Error type
Communication
Operation Off
Error
Communication
Operation-off
Error
Indoor Sensor
Operation-off
Error
Indoor Sensor
Operation-off
Error
Indoor Sensor
Operation-off
Error
Self Diagnosys
Operation-off
Error
Communication
Operation-off
error
Communication
Operation-off
error
Communication
-
error
Outdoor sensor
Operation-off
error
Outdoor sensor
Operation-off
error
Outdoor sensor
Operation-off
error
Outdoor unit
-
protection con-
trol error
Outdoor sensor
Operation-off
error