Outdoor Units - Daikin Super Multi NX C-Series Service Manual

Troubleshooting
5.2

Outdoor Units

4
Green : Flashes when in normal condition
Red : OFF in normal condition
- : Not used for troubleshooting
∗ : Varies depending on the cases.
Outdoor Unit LED Indication
Green Red
A 1 2 3
5 3 3 3
5 3 3 4
5 4 3 4
5 3 4 4
5 4 3 4
5 3 3 3
5 4 4 3
5 4 4 3
5 3 3 4
5 3 4 3
5 4 3 4
5 4 4 4
5 4 3 3
5 4 4 3
5 4 3 3
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.
168
: ON, 1 : OFF, 5 : Blinks
Indication on
the remote
controller
4
Outdoor unit in normal condition
3 00
(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
(E5)
OL activation (compressor overload)
3
(E6)
Compressor lock
3
3 F3 Discharge pipe temperature control
4 L4 Radiation fin temperature rise
(Protection of driver overheating)
CT or related abnormality
3 H8
Position sensor abnormality
3 H6
Outdoor air thermistor or related abnormality
H9
Discharge pipe thermistor or related abnormality
J3
Heat exchanger thermistor or related abnormality
J6
Liquid pipe thermistor or related abnormality
J8
Gas pipe thermistor or related abnormality
J9
Radiation fin thermistor or related abnormality
P4
Output over current detection
3 L5
Input over current detection
4 E8
Freeze-up protection control
4 A5
DC fan lock
4 E7
Four way valve abnormality
3 EA
Electrical box temperature rise
4 L3
Low-voltage detection
4 U2
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
SiE12-411
Details of
Fault (Refer
to the
indicated
page.)
—
203
203
200
181
182
188
196
190
189
192
192
192
192
192
192
198
184
179
183
186
194
202
Service Diagnosis