Specifications

SiENBE04-507A Troubleshooting
Service Diagnosis 111
4. Troubleshooting
4.1 Error Codes and Description
H: Displayed only when system-down occurs.
Code Indication Description
Reference
Page
System
00
Normal
—
U0H
Insufficient gas
141
U2
Over-voltage detection
143
U4
Signal transmission error (between indoor and outdoor unit)
118
UA
Unspecified voltage (between indoor and outdoor unit)
119
Indoor
Unit
A1
Indoor unit PCB abnormality
112
A5
Freeze-up protection control or high pressure control
113
A6
Fan motor or related abnormality
115
C4
Heat exchanger temperature thermistor abnormality
117
C9
Room temperature thermistor abnormality
117
Outdoor
Unit
E1
Outdoor unit PCB abnormality
120
E5H
OL activation (compressor overload)
121
E6H
Compressor lock
122
E7
DC fan lock
123
E8
Input over current detection
124
EA
Four way valve abnormality
125
F3
Discharge pipe temperature control
127
F6
High pressure control in cooling
128
H0
Compressor system sensor abnormality
130
H6
Position sensor abnormality
131
H8
DC voltage/current sensor abnormality
132
H9
Outdoor air thermistor or related abnormality
133
J3
Discharge pipe temperature thermistor or related abnormality
133
J6
Heat exchanger temperature thermistor or related abnormality
133
L3
Electrical box temperature rise
135
L4
Radiation fin temperature rise
137
L5
Output over current detection
139
P4
Heat radiation fin thermistor or related abnormality
133