Troubleshooting; Error Codes And Description - Daikin D Series Service Manual

Troubleshooting

4. Troubleshooting

4.1

Error Codes and Description

Code Indication
00
System
U0
U2
U4
UA
UH
A1
Indoor
Unit
A5
A6
C4
C9
A5
Outdoor
Unit
E5
E6
E7
E8
EA
F3
F6
H6
H8
H9
J3
J6
J8
J9
L3
L4
L5
P4
: Displayed only when system-down occurs.
134
Description
Normal
Insufficient gas
Over-voltage detection
Outdoor unit PCB abnormality or signal transmission circuit abnormality
Unspecified voltage (between indoor and outdoor units)
Anti-icing function in other rooms
Indoor unit PCB abnormality
Freeze-up protection control or high pressure control
AC motor (Wall : 20~35 C series, Duct, Floor / Ceiling)
Fan motor or related
abnormality DC motor (Wall : 20~35 D series)
Heat exchanger temperature thermistor abnormality
Room temperature thermistor abnormality
Freeze-up protection control
OL activation (compressor overload)
Compressor lock
DC fan lock
Input over current detection
Four way valve abnormality
Discharge pipe temperature control
High pressure control in cooling
Position sensor abnormality
CT or related abnormality
Outdoor air thermistor or related abnormality
Discharge pipe temperature thermistor or related abnormality
Heat exchanger temperature thermistor or related abnormality
Liquid pipe temperature thermistor or related abnormality
Gas pipe temperature thermistor or related abnormality
Electrical box temperature rise
Radiation fin temperature rise
Output over current detection
Radiation fin thermistor or related abnormality
SiBE12-519
Reference
Page
—
165
167
169
168
168
135
136
138
139
141
141
142
144
145
146
147
149
151
152
154
155
157
157
157
157
157
159
161
163
157
Service Diagnosis