SiBE05-513A Troubleshooting
Service Diagnosis 81
4. Troubleshooting
4.1 Error Codes and Description
: Displayed only when system-down occurs.
Code Indication Description
Reference
Page
System
00
Normal
—
U0
Insufficient gas
110
U2
Over-voltage detection
112
U4
Signal transmission error (between indoor and outdoor unit)
87
UA
Unspecified voltage (between indoor and outdoor unit)
88
Indoor
Unit
A1
Indoor unit PCB abnormality
82
A5
Freeze-up protection control or high pressure control
83
A6
Fan motor or related abnormality
85
C4
Heat exchanger temperature thermistor abnormality
86
C9
Room temperature thermistor abnormality
86
Outdoor
Unit
E1
Outdoor unit PCB abnormality
89
E5
OL activation (compressor overload)
90
E6
Compressor lock
91
E7
DC fan lock
92
E8
Input over current detection
93
EA
Four way valve abnormality
94
F3
Discharge pipe temperature control
96
F6
High pressure control in cooling
97
H0
Compressor system sensor abnormality
99
H6
Position sensor abnormality
100
H8
DC voltage/current sensor abnormality
101
H9
Outdoor air thermistor or related abnormality
102
J3
Discharge pipe temperature thermistor or related abnormality
102
J6
Heat exchanger temperature thermistor or related abnormality
102
L3
Electrical box temperature rise
104
L4
Radiation fin temperature rise
106
L5
Output over current detection
108
P4
Heat radiation fin thermistor or related abnormality
102