Aurora Service Manual

SiUS121737EA Code Indication on Remote Controller
Service Diagnosis 148
4.3 Outdoor Unit
i: ON, h: OFF, j: Blinks
Notes: 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
jhhhhh
00 Normal condition —
UA Unspecified voltage (between indoor unit and outdoor unit) 182
UH Anti-icing control in other rooms 182
jhhiih
(U0) Refrigerant shortage 177
jihhih
U2 Low-voltage detection or over-voltage detection 179
jhihhh
U3 Wiring error check unexecuted 181
jihiih
A5 Anti-icing control for indoor unit 183
jiiihh
E1 Outdoor unit PCB abnormality 185
jihihh
(E5) OL activation (compressor overload) 186
jhiihh
(E6) Compressor lock 188
jiiiih
E7 DC fan lock 189
jhihih
E8 Input overcurrent detection 190
jihhhh
EA Four way valve abnormality 191
jihihh
F3 Discharge pipe temperature control 193
jihiih
F6 High pressure control in cooling 194
jiihhh
H0 Compressor sensor system abnormality 195
H6 Position sensor abnormality 197
H8 CT or related abnormality 199
H9 Outdoor temperature thermistor or related abnormality 201
J3 Discharge pipe thermistor or related abnormality 201
J6 Outdoor heat exchanger thermistor or related abnormality 201
J8 Liquid pipe thermistor or related abnormality 201
J9 Gas pipe thermistor or related abnormality 201
P4 Radiation fin thermistor or related abnormality 201
jiihih
L3 Electrical box temperature rise 203
jhhhih
L4 Radiation fin temperature rise 204
jhhihh
L5 Output overcurrent detection 205
i
——————
See the note 4.
—
h
——————
Check the power supply.
—