Error Codes - Sub Codes - Daikin RXYQ-TA Series Service Manual

Service Check Function
2.4

Error Codes - Sub Codes

If an error code like the one shown below is displayed when the navigation remote controller (BRC1E series) is in
use, make a detailed diagnosis or a diagnosis of the relevant unit.
2.4.1 Indoor Unit
Error code
A0 - 01 External protection device abnormality
A6 - 01 Fan motor locked
A6 - 10 Fan overcurrent error
A6 - 11 Fan position detection error
A6 - 20 Indoor fan motor status abnormality
A6 - 21 Indoor fan motor insufficient airflow abnormality Refer to page 189.
A8 - 01 Power supply voltage error
A9 - 01 Electronic expansion valve error
A9 - 02 Refrigerant leakage detection error
AH - 03 Transmission error (between the self-cleaning
decoration panel and the indoor unit)
(when the self-cleaning decoration panel is mounted)
AH - 04 Dust detection sensor error
(when the self-cleaning decoration panel is mounted)
AH - 05 Dust collection sign error
(when the self-cleaning decoration panel is mounted)
AH - 06 Air filter rotation error
(when the self-cleaning decoration panel is mounted)
AH - 07 Damper rotation error
(when the self-cleaning decoration panel is mounted)
AH - 08 Filter self-cleaning operation error
(when the self-cleaning decoration panel is mounted)
AH - 09 Filter self-cleaning operation start disabled error
(when the self-cleaning decoration panel is mounted)
AJ - 01 Capacity setting error
AJ - 02 Electronic expansion valve setting error
C1 - 01 Transmission abnormality between indoor unit
PCB and fan PCB
C1 - 07 Blower motor communication error
C6 - 01 Defective combination of indoor unit PCB and
the fan PCB
Blower motor HP mismatch
C6 - 02 Indoor blower does not have required
parameters to function
U4 - 01 Indoor-outdoor transmission error
UA - 13 Refrigerant type error
UA - 15 Not applicable for self-cleaning decoration
panel [when the self-cleaning decoration panel
is mounted]
UA - 17 Incorrect electric heater capacity setting
2.4.2 Outdoor Unit
Refer to page 131.
173
Description of error
Troubleshooting
Description of diagnosis
Refer to page 175.
A locked fan motor current has been detected.
Turn the fan by hand to check for the connection of connectors.
A fan motor overcurrent has been detected.
Check for the connection of the connector between the fan motor
and the fan PCB. If the connection is normal, replace the fan
motor. If this still cannot solve the error, replace the fan PCB.
An error in the detection of position of the fan motor. Check for the
connection of the connector between the fan motor and the fan
PCB. If the connection is normal, replace the fan motor. If this still
cannot solve the error, replace the fan PCB.
Refer to page 188.
Check for the input voltage of the fan motor.
There is an error in the electronic expansion valve coil or a
connector disconnected.
Refrigerant leaks even if the electronic expansion valve is closed.
Replace the electronic expansion valve.
Check for the connection of the harness connector between the
panel PCB and the indoor unit PCB.
Check for the connections of the connector X12A on the panel
PCB and the connectors X18A and X19A on the sensor PCB.
Check for clogging with dust at the dust collection port as well as in
the brush unit, S-shaped pipe, and dust box. Furthermore, check for
any stains of the light receiving and emitting parts of the infrared unit.
Check for anything getting in the way of rotating the filter (e.g. the
filter comes off or the drive gear is clogged with foreign matter).
The damper does not rotate normally. Check for any foreign
matter around the damper and for the operation of the gear and
limit switch.
The unit has not yet completed the filter self-cleaning operation
even after the lapse of specified period of time. Check for any
external noise, etc.
The unit has been put into a state in which the filter self-cleaning
operation is disabled. Check the unit for the operating conditions.
There is an error in the capacity setting of the indoor unit PCB.
There is a fault in the setting of the gear type electronic expansion
valve/direct acting type electronic expansion valve.
Check for the conditions of transmission between the indoor unit
PCB and the fan PCB.
Refer to page 199.
A combination of indoor unit PCB and the fan PCB is defective.
Check whether the capacity setting adaptor is correct and the
type of the fan PCB is correct.
Refer to page 203.
Refer to the U4 flow chart.
The type of refrigerant used for the indoor unit is different from
that used for the outdoor unit.
An outdoor unit is not applicable for the self-cleaning decoration
panel is connected.
Refer to page 283.
SiUS341615E
Service Diagnosis