Si04-402A
Troubleshooting
Service Diagnosis
73
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
101
U2
Over-voltage detection
103
U4
Signal transmission error (between indoor and outdoor unit)
81
U5
Signal transmission error (between indoor unit and wired remote
controller)
82
UA
Unspecified voltage (between indoor and outdoor unit)
83
Indoor
Unit
A1
Indoor unit PCB abnormality
74
A5
Freeze-up protection control or high pressure control
75
A6
Fan motor or related abnormality
77
C4
Heat exchanger thermistor abnormality
79
C7
Front panel open / close fault
80
C9
Room temperature thermistor abnormality
79
Outdoor
Unit
E1
Outdoor unit PCB abnormality
84
E5
OL activation (compressor overload)
85
E6
Compressor lock
86
E7
DC fan lock
87
E8
Input over current detection
88
EA
Four way valve abnormality
89
F3
Discharge pipe temperature control
91
F6
High pressure control in cooling
92
H0
Sensor abnormality around compressor system
94
H6
Position sensor abnormality
95
H8
DC voltage / current sensor abnormality
96
H9
Outdoor air thermistor or related abnormality
97
J3
Discharge pipe thermistor or related abnormality
97
J6
Heat exchanger thermistor or related abnormality
97
L5
Output over current detection
99
Summary of Contents for FTXG25CVMAW
Page 181: ...Outdoor Unit Si04 402A 172 Removal Procedure...
Page 185: ...Others Si04 402A 176 Others...