Outdoor Unit - Daikin Super Multi NX FFQ25B8V1B Service Manual

SiBE121021_C
4.3

Outdoor Unit

i
Green : Blinks in normal condition
Red : OFF in normal condition
Outdoor Unit LED Indication
Green Red
A 1 2 3
j h h h
j h h i
j i h h
j h i i
j i h i
j i i i
j i h i
j h i i
j i i i
j h i h
j i h i
j i h i
j i i h
j i i h
j h h h
j h h i
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
3. The indoor unit error code may take the precedence in the remote controller display.
4. ★ 3 room models and 4 room models do not have LED5.
Service Diagnosis
h j
: ON, : OFF, : Blinks
Error Codes
5 ★
4
h h 00
UA
UH
i h
(U0)
i h U2
i h U7
i h A5
h h E1
h h
(E5)
h h
(E6)
i h E7
i h E8
h h F3
i h F6
h h H0
H6
H8
H9
J3
J6
J8
J9
P4
i h L3
i h L4
h h L5
is 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.
Code Indication on Remote Controller
Description
Normal condition
Unspecified voltage (between indoor and outdoor units)
Anti-icing function in other rooms
Refrigerant shortage
Low-voltage detection or over-voltage detection
Signal transmission error (on outdoor unit PCB)
Anti-icing function
Outdoor unit PCB abnormality
OL activation (compressor overload)
Compressor lock
DC fan lock
Input overcurrent detection
Discharge pipe temperature control
High pressure control in cooling
Compressor sensor system abnormality
Position sensor abnormality
CT or related abnormality
Outdoor temperature thermistor or related
abnormality
Discharge pipe thermistor or related abnormality
Outdoor heat exchanger thermistor or related
abnormality
Liquid pipe thermistor or related abnormality
Gas pipe thermistor or related abnormality
Radiation fin thermistor or related abnormality
Electrical box temperature rise
Radiation fin temperature rise
Output overcurrent detection
Reference
Page
—
361
361
357
359
360
333
335
336
337
338
339
340
341
343
345
347
349
349
349
349
349
349
351
353
355
307