Troubleshooting - Samsung UH052EAMT Installation Manual

Troubleshooting

Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Display
x
x
x
x
Flicker
Flicker
K1, K2, K3, K4,
K5
Flicker
The order of priority : E1 → E2 → E4 → E5 → P0 → P1 → P5 → P6 → t1 → t2 → t3 → tu →
28
E-
Explanation
High temperature of Discharge (Protection control)
High temperature 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 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
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
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)
Over 30°C when heating (Outdoor temperature)
to → G4 → G5 → E3 → qx → rx → vx → K1, K2, K3, K4, K5
- In case that the same error displays from multi-indoor units, the one having the faster address
has the priority.
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