Service manual

Troubleshooting SiENBE07-618_C
60 Service Diagnosis
4. Troubleshooting
4.1 Error Codes and Description
H: Displayed only when system-down occurs.
Error Codes Description
Reference
Page
System
00
Normal —
U0H
Refrigerant shortage 90
U2
Low-voltage detection or over-voltage detection 92
U4
Signal transmission error (between indoor unit and outdoor unit) 66
UA
Unspecified voltage (between indoor unit and outdoor unit) 67
Indoor
Unit
A1
Indoor unit PCB abnormality 61
A5
Freeze-up protection control or heating peak-cut control 62
A6
Fan motor (AC motor) or related abnormality 64
C4
Indoor heat exchanger thermistor or related abnormality 65
C9
Room temperature thermistor or related abnormality 65
Outdoor
Unit
E1
Outdoor unit PCB abnormality 68
E5H
OL activation (compressor overload) 69
E6H
Compressor lock 70
E7
DC fan lock 71
E8
Input overcurrent detection 72
EA
Four way valve abnormality 73
F3
Discharge pipe temperature control 75
F6
High pressure control in cooling 76
H0
Compressor system sensor abnormality 77
H6
Position sensor abnormality 78
H8
CT or related abnormality 80
H9
Outdoor temperature thermistor or related abnormality 82
J3
Discharge pipe thermistor or related abnormality 82
J6
Outdoor heat exchanger thermistor or related abnormality 82
L3
Electrical box temperature rise 84
L4
Radiation fin temperature rise 86
L5
Output overcurrent detection 88
P4
Radiation fin thermistor or related abnormality 82
U7
Signal transmission error (on outdoor unit PCB) 93
SIENBE07-618_C_FRONT.pdf 72 9/02/2011 9:25:06