Operating Instructions and Installation
Samsung Electronics
4-7
Outdoor Unit(cont.)
SUB PCB
7-Segment
Diplay
Content
Measures
Product operation status in
case of error
Number of Times
Outdoor unit
compressor/
outdoor unit fan
Indoor unit not connected
•
Check the indoor unit connection
•
Check the indoor unit number(multi only)
1 Time
Operation-off
1min. Time out Comm.
(Display Board : Onboard :
Indoor
↔
Outdoor)
•
Check the indoor unit connection
•
Check the indoor unit option
1 Time
Operation-off
Abnormal Serial
communication(Display Board:
Indoor
↔
Outdoor)
-
-
-
-
-
Outdoor temp sensor error
(Dual/Single)
•
Check the connection status of the sensor
•
Check the sensor location
•
Check the risistance values of sensor
1 Time
Operation-off
Cond temp sensor error
(Dual/Single)
•
Check the connection status of the sensor
•
Check the sensor location
•
Check the risistance values of sensor
1 Time
Operation-off
Discharge temp sensor error
(Dual/Single)
•
Check the connection status of the sensor
•
Check the sensor location
•
Check the risistance values of sensor
1 Time
Operation-off
Discharge over temperature
(Dual/Single)
-
3 Times
Operation-off
Operation condition
secession(HEATING)
•
Check the operation status of operation mode
•
Check the temp. sensor
1 Time
Operation-off
Operation condition
secession(COOLING)
Fan error
•
Check the input power connection status
•
Check the connection status between the motor
and PCB in outdoor unit
•
Check the fuse of indoor/outdoor units
1 Time
Operation-off
Comp Starting error
•
Check the connection status of the compressor
•
Check the resistand between different phases in
compressor
5 Times
Operation-off
I_Trip error / PFC Over current
•
Check the input power
•
Check the refrigerant is filled
•
Check the outdoor fan operation normally
3 Times
Operation-off
IPM Over Current(O.C)
•
Check the refrigerant is filled
•
Check the connection status of compressor and if it
operates normally
•
Check for any obstacles around indoor/outdoor
units
9 Times
Operation-off
:
OFF
:
ON
◎
:
BLINK