Samsung Electronics
Troubleshooting
12-5
12-2-3 Outdoor Unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
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Error about protection
control of outdoor unit
Errors about outdoor unit
sensor (OPEN/SHORT)
Detection during the
operation of indoor unit
(Sensing and sending errors
into the communication data)
Communication and
indoor unit errors
Self-diagnosis of indoor and
outdoor unit (x:indoor unit
address)
Displays of operating status
x
Flicker
Flicker
K1, K2, K3, K4,
K5 Flicker
x
x
x
High temperature of Discharge (Protection control)
High temperature of outdoor heat exchanger (Protection control)
COMP DOWN to protect being frozen
Error of OUT TEMP sensor (OPEN/SHORT)
Error of temperature sensor in outdoor heat exchanger (OPEN/SHORT)
Error of Discharge TEMP sensor (OPEN/SHORT)
System Down caused by communication error after
completion of tracking
Error of float switch in indoor unit
Error of setting option switches for optional accessories
OPEN/SHORT error of room sensor in indoor unit
OPEN/SHORT error of eva in sensor in indoor unit
EEPROM option error
Error of fan starting
Close error of electronic expansion valve in outdoor unit
(Detected once or more times)
Below -5°C when cooling (Outdoor temperature)
Over 30°C when heating (Outdoor temperature)
The order of priority : E1
→
E2
→
E3
→
E5
→
P0
→
P1
→
P4
→
P5
→
P9
→
t1
→
t2
→
t3
→
tu
→
to
→
G4
→
G5
→
E3
→
qx
→
rx
→
vx
→
K1, K2, K3, K4, K5
The order of priority :
- In case that the same error displays from multi-indoor units, the one having the faster address has the priority.
Remark
Display
Explanation
Error of momentary power failure(Disappears when the unit
is Off/On)
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