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Code Indication on Remote Controller
SiSG121917E
115
Part 6 Service Diagnosis
Notes
4.2 Outdoor Unit
i
: ON,
h
: OFF,
j
: Blinks
Green : Blinks in normal condition
Red : OFF in normal condition
1. The error codes in the parenthesis ( ) are displayed only when the system is shut down.
2. When a sensor error occurs, check the remote controller display to determine which sensor
is malfunctioning.
If the remote controller does not indicate the error code, conduct the following procedure.
Turn the power switch off and back on again. If the same LED indication appears again
immediately after the power is turned on, the fault is in the thermistor.
If the above condition does not result, the fault is in the CT.
3. The indoor unit error code may take the precedence in the remote controller display.
Outdoor Unit LED Indication
Error
Codes
Description
Reference
Page
Green
Red
A
1
2
3
4
5
j
h
h
h
h
h
00
Normal condition
—
UA
Unspecified voltage (between indoor unit and
outdoor unit)
UH
Anti-icing function in other rooms
j
h
h
i
i
h
(
U0
)
Refrigerant shortage
j
i
h
h
i
h
U2
Low-voltage detection or over-voltage detection
j
h
i
h
h
h
U3
Wiring Error Check Unexecuted
j
h
i
i
i
h
U7
Signal transmission error (on outdoor unit PCB)
j
i
h
i
i
h
A5
Anti-icing control for indoor unit
j
i
i
i
h
h
E1
Outdoor unit PCB abnormality
j
i
h
i
h
h
(
E5
)
OL activation (compressor overload)
j
h
i
i
h
h
(
E6
)
Compressor lock
j
i
i
i
i
h
E7
DC fan lock
j
h
i
h
i
h
E8
Input overcurrent detection
j
i
h
i
h
h
F3
Discharge pipe temperature control
j
i
h
i
i
h
F6
High pressure control in cooling
j
h
h
i
i
h
F8
System shutdown due to temperature abnormality
in compressor
j
i
i
h
h
h
H0
Compressor system sensor abnormality
H6
Position sensor abnormality
H8
CT or related abnormality
H9
Outdoor temperature thermistor or related
abnormality
J3
Discharge pipe thermistor or related abnormality
J6
Outdoor heat exchanger thermistor or related
abnormality
J8
Liquid pipe thermistor or related abnormality
J9
Gas pipe thermistor or related abnormality
P4
Radiation fin thermistor or related abnormality
j
i
i
h
i
h
L3
Electrical box temperature rise
j
h
h
h
i
h
L4
Radiation fin temperature rise
j
h
h
i
h
h
L5
Output overcurrent detection