Daikin FTKE25BVM, Service Manual

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Troubleshooting Si12-411A
170 Service Diagnosis
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 Details of
Fault (Refer
to the
indicated
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)
205
UH
Anti-icing function in other rooms
205
5 3 3 4 4
(
U0
) Insufficient gas
202
5 4 3 4 3
(
E5
)
OL activation (compressor overload)
183
5 3 4 4 3
(
E6
) Compressor lock
184
5 4 3 4 3
F3
Discharge pipe temperature control
190
5 3 3 3 4
L4
Radiation fin temperature rise
(Protection of driver overheating)
198
5 4 4 3 3
H8 CT or related abnormality
192
5 4 4 3 3
H6
Position sensor abnormality
191
H9
Outdoor air thermistor or related abnormality
194
J3
Discharge pipe thermistor or related abnormality
194
J6 Heat exchanger thermistor or related abnormality
194
J8
Liquid pipe thermistor or related abnormality
194
J9
Gas pipe thermistor or related abnormality
194
P4
Radiation fin thermistor or related abnormality
194
5 3 3 4 3
L5
Output over current detection
200
5 3 4 3 4
E8
Input over current detection
186
5 4 3 4 4
A5
Freeze-up protection control
181
5 4 4 4 4
E7
DC fan lock
185
5 4 3 3 3
EA Four way valve abnormality
188
5 4 4 3 4
L3
Electrical box temperature rise
196
5 4 3 3 4
U2
Low-voltage detection
204