Service Manual

SiUS121502E Code Indication on Remote Controller
Service Diagnosis 115
4.3 Outdoor Unit
i
: ON,
h
: OFF,
j
: Blinks
Note: 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 off and then 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.
4. Turn the power off and then on again. If the same LED indication appears again, outdoor unit
PCB is faulty. Replace the outdoor unit PCB.
Outdoor Unit LED Indication
Error
Codes
Description
Reference
Page
Green Red
A12345
jhhhhh00
Normal condition —
UA
Unspecified voltage (between indoor unit and outdoor unit) 141
UH
Anti-icing control in other rooms 141
jhhiih (U0)
Refrigerant shortage 136
jihhihU2
Low-voltage detection or over-voltage detection 138
jhihhhU3
Wiring Error Check Unexecuted 140
jihiihA5
Anti-icing control for indoor unit 142
jiiihhE1
Outdoor unit PCB abnormality 144
jihihh (E5)
OL activation (compressor overload) 145
jhiihh (E6)
Compressor lock 147
jiiiihE7
DC fan lock 148
jhihihE8
Input overcurrent detection 149
jihhhhEA
Four way valve abnormality 150
jihihhF3
Discharge pipe temperature control 152
jihiihF6
High pressure control in cooling 153
jiihhhH0
Compressor sensor system abnormality 154
H6
Position sensor abnormality 156
H8
CT or related abnormality 158
H9
Outdoor temperature thermistor or related abnormality 160
J3
Discharge pipe thermistor or related abnormality 160
J6
Outdoor heat exchanger thermistor or related abnormality 160
J8
Liquid pipe thermistor or related abnormality 160
J9
Gas pipe thermistor or related abnormality 160
P4
Radiation fin thermistor or related abnormality 160
jiihihL3
Electrical box temperature rise 162
jhhhihL4
Radiation fin temperature rise 163
jhhihhL5
Output overcurrent detection 164
i
——————
See the note 4.
—
h
——————
Check the power supply.
—