Daikin F-Series, Service Manual

Page: 246 / 355

SiBE12-713 Troubleshooting
Service Diagnosis 235
5.2 Outdoor Units
4
: ON,
1
: OFF,
5
: Blinks
Green : Flashes when in normal condition
Red : OFF in normal condition
- : Not used for troubleshooting
∗
: Varies depending on the cases.
Note: 1. The indications in the parenthesis ( ) in the remote controller display column are displayed
only when system-down occurs.
2. When a sensor error occurs, check the remote controller display to determine which sensor
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.
3. The indoor unit error indication may take the precedence in the remote controller display.
Outdoor Unit LED Indication Indication on
the remote
controller
Description of The Fault
Reference
Page
Green Red
A 1 2 3 4
5 3 3 3 3
00
Outdoor unit in normal condition
(Conduct a diagnosis of the indoor unit.)
—
UA
Unspecified voltage (between indoor and outdoor units)
275
UH
Anti-icing function in other rooms
275
5 3 3 4 4
(
U0
) Insufficient gas
271
5 4 3 3 4
U2
Low-voltage detection or over-voltage detection
273
5 3 4 4 4
U7
Signal transmission error (on outdoor unit PCB)
274
5 4 3 4 4
A5
Freeze-up protection control
247
5 4 4 4 3
E1
Outdoor unit PCB abnormality
249
5 4 3 4 3
(
E5
)
OL activation (compressor overload)
250
5 3 4 4 3
(
E6
) Compressor lock
251
5 4 4 4 4
E7
DC fan lock
252
5 3 4 3 4
E8
Input over current detection
253
5 4 3 4 3
F3
Discharge pipe temperature control
255
5 4 3 4 4
F6
High pressure control in cooling
256
5 4 4 3 3
H0
Compressor sensor system abnormality
258
H8
CT or related abnormality
261
5 4 4 3 3
H6
Position sensor abnormality
260
H9
Outdoor air thermistor or related abnormality
263
J3
Discharge pipe thermistor or related abnormality
263
J6
Heat exchanger thermistor or related abnormality
263
J8
Liquid pipe thermistor or related abnormality
263
J9
Gas pipe thermistor or related abnormality
263
P4
Radiation fin thermistor or related abnormality
263
5 4 4 3 4
L3
Electrical box temperature rise
265
5 3 3 3 4
L4
Radiation fin temperature rise
(Protection of driver overheating)
267
5 3 3 4 3
L5
Output over current detection
269