Samsung CH070EAMC, Service Manual

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Samsung Electronics
Troubleshooting
12-2-3 Outdoor Unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
12-5
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
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
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)
Explanation Display
Error about protection
control of outdoor unit
Remark
x
x
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
Self-diagnosis of indoor and
outdoor unit (x:indoor unit
address)
Displays of operating status
Flicker
Flicker
K1, K2, K3, K4,
K5
Flicker
x
x
The order of priority : E1

E2

E5

P0

P1

P3

P4

P5

P9

t1

t2

t3

tu

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.