Outdoor Unit - Daikin SUPER MULTI NX G Series Service Manual

SiUS12-928_A
5.2

Outdoor Unit

4
Normal condition : Green - blinks, Red - OFF
Outdoor Unit LED Indication
Green Red
A 1 2 3
3 3 3
5 3 3 4
Note: 1. The error codes in the parenthesis ( ) are displayed only when the system is shut down.
2. When a sensor error occurs, check the remote controller display to determine which sensor is
3. The indoor unit error code may take the precedence in the remote controller display.
Service Diagnosis
: ON, 1 : OFF, 5 : Blinks
Error Codes
4
3 00
Normal condition
UA
Unspecified voltage (between indoor and outdoor units)
UH
Anti-icing function in other rooms
(U0)
4 Refrigerant shortage
U2
Low-voltage detection or over-voltage detection
Signal transmission error (on outdoor unit PCB)
U7
(24/32 class)
A5
Anti-icing function
E1
Outdoor unit PCB abnormality (24/32 class)
(E5)
OL activation (compressor overload)
(E6)
Compressor lock
E7
DC fan lock
E8
Input overcurrent detection
EA
Four-way valve abnormality (18 class)
F3
Discharge pipe temperature control
F6
High pressure control in cooling
Compressor sensor system abnormality
H0
(24/32 class)
H8
CT or related abnormality
H6
Position sensor abnormality
H9
Outdoor temperature thermistor or related abnormality
J3
Discharge pipe thermistor or related abnormality
J6
Outdoor heat exchanger thermistor or related abnormality
J8
Liquid pipe thermistor or related abnormality
J9
Gas pipe thermistor or related abnormality
P4
Radiation fin thermistor or related abnormality
L3
Electrical box temperature rise
L4
Radiation fin temperature rise
L5
Output overcurrent detection
malfunctioning.
If the remote controller does not indicate the error code, conduct the following procedure.
*Turn the power switch off and back on again. If the same LED indication appears again
immediately after the power is turned on, the fault is in the thermistor.
*If the above condition does not result, the fault is in the CT.
Description of Fault
Troubleshooting
Reference
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