Troubleshooting - Samsung UH052EAMC Installation Manual

Troubleshooting

Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Display
High temperature of Discharge (Protection control)
High temperature of outdoor heat exchanger (Protection control)
Low pressure of outdoor (Protection control)
Reverse phase error (Protection control)
COMP DOWN to protect being frozen
I nstant power supply failure (Power on/ off)
In removing frost
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
Mismatching of the indoor unit numbers set with those
communicated after completion of tracking
Error of float switch in indoor unit
Error of setting option switches for optional accessories
Indoor units communication error
OPEN/SHORT error of room sensor in indoor unit
OPEN/SHORT error of eva in sensor in indoor unit
Error of fan starting
Open error of electronic expansion valve in outdoor unit
(Detected once or more times)
Close error of electronic expansion valve in outdoor unit
(Detected once or more times)
(Detected once or more times)
Flicker
Below -5°C when cooling (Outdoor temperature)
Over 30°C when heating (Outdoor temperature)
Flicker
K1, K2, K3, K4, K5
Displays of Key mode and emergency operating
Flicker
The order of priority :

G4
- In case that the same error displays from multi-indoor units, the one having the faster address has
the priority.
Explanation
E6
    
G5 E3 qx rx vx K1, K2, K3, K4, K5
Remark
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 com-
munication data)
Communication and indoor
unit errors
Indoor units communication error
Self-diagnosis of indoor and
outdoor unit (x:indoor unit
address)
Displays of operating status
9
P4 tu to
25
E-