Samsung GH052EAM Service Manual page 19

4-2 Outdoor Unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Display
High temp. of Discharge (Protection control)
High temp. of outdoor heat exchanger (Protection control)
COMP DOWN to protect being frozen
Error of momentary power failure (disappears when the unit is Off/On)
Error of OUT TEMP. sensor (OPEN/SHORT)
Error of temp. 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 evap in sensor in indoor unit
x
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)
Flicker
Below -5°C when cooling (Outdoor temp.)
Over 30°C when heating (Outdoor temp.)
Flicker
K1, K2, K3, K4,
Refer to page 15
K5 Flicker
The order of priority : E1 → E2 → E4 → P0 → P1 → P5 → P6 → 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.
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Explanation 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
Samsung Electronics