Outdoor Units - Daikin D-Series Service Manual

Troubleshooting
5.2

Outdoor Units

4
Green : Flashes when in normal condition
Red : OFF in normal condition
- : Not used for troubleshooting
∗
Outdoor Unit LED Indication
Green Red
A 1 2 3
5 3 3 3
5 3 3 4
5 4 3 3
5 3 4 4
5 4 3 4
5 4 4 4
5 4 3 4
5 3 4 4
5 4 4 4
5 3 4 3
5 4 3 3
5 4 3 4
5 4 3 4
5 4 4 3
5 4 4 3
5 4 4 3
5 3 3 3
5 3 3 4
Note: 1. The indications in the parenthesis ( ) in the remote controller display column are displayed
2. When a sensor error occurs, check the remote controller display to determine which sensor
3. The indoor unit error indication may take the precedence in the remote controller display.
210
: ON, 1 : OFF, 5 : Blinks
: Varies depending on the cases.
Indication on
the remote
controller
4
3 00
Outdoor unit in normal condition
(Conduct a diagnosis of the indoor unit.)
UA
Unspecified voltage (between indoor and outdoor units)
UH
Anti-icing function in other rooms
(U0) Insufficient gas
4
4 U2
Low-voltage detection or over-voltage detection
4 U7
Signal transmission error (on outdoor unit PCB)
4 A5
Freeze-up protection control
3 E1
Outdoor unit PCB abnormality
(E5) OL activation (compressor overload)
3
(E6) Compressor lock
3
4 E7
DC fan lock
4 E8
Input over current detection
3 EA
Four way valve abnormality
3 F3
Discharge pipe temperature control
4 F6
High pressure control in cooling
3 H0
Compressor sensor system abnormality
H8
CT or related abnormality
3 H6
Position sensor abnormality
H9
Outdoor air thermistor or related abnormality
J3
Discharge pipe thermistor or related abnormality
J6
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
4 L3
Electrical box temperature rise
4 L4
Radiation fin temperature rise
(Protection of driver overheating)
3 L5
Output over current detection
only when system-down occurs.
is malfunctioning.
If the remote controller does not indicate the error type, conduct the following operation.
*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 The Fault
Si12-619A
Reference
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Service Diagnosis