Samsung DH094EAM Service Manual page 24

5-2-3 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)
Reverse phase error (Protection control)
COMP DOWN to protect being frozen
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
x
OPEN/SHORT error of room sensor in indoor unit
x OPEN/SHORT error of eva in sensor in indoor unit
EEPROM option error
x
Error of fan starting
x
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)
Below -5°C when cooling (Outdoor temperature)
Flicker
Over 30°C when heating (Outdoor temperature)
Flicker
K1, K2, K3, K4,
K5 Flicker
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.
Samsung Electronics
Explanation
Control Specification & Troubleshooting
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 communication data)
Communication and
indoor unit errors
Self-diagnosis of indoor and
outdoor unit (x:indoor unit
address)
Displays of operating status
23