Error Codes (Sub Codes) - Daikin VRV RXYMQ-A Series Service Manual

SiME332106E
5.2

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 referring
to the attached list of detailed error codes.
5.2.1 Indoor Unit
Error code
Description of error
Fan motor locked
A6 - 01
Fan overcurrent error
A6 - 10
Fan position detection error
A6 - 11
A8 - 01 Power supply voltage error
Electronic expansion valve error
A9 - 01
Refrigerant leakage detection error
A9 - 02
Transmission error (between the
self-cleaning decoration panel and the
AH - 03 indoor unit)
(when the self-cleaning decoration panel is
mounted)
Dust detection sensor error
AH - 04 (when the self-cleaning decoration panel is
mounted)
Dust collection sign error
AH - 05 (when the self-cleaning decoration panel is
mounted)
Air filter rotation error
AH - 06 (when the self-cleaning decoration panel is
mounted)
Damper rotation error
AH - 07 (when the self-cleaning decoration panel is
mounted)
Filter self-cleaning operation error
AH - 08 (when the self-cleaning decoration panel is
mounted)
Filter self-cleaning operation start disabled
AH - 09 error (when the self-cleaning decoration
panel is mounted)
Auto grille unit error
AH - 12
(when the auto grille unit is mounted)
AJ - 01 Capacity setting error
Electronic expansion valve setting error
AJ - 02
Transmission error (between indoor unit
C1 - 01
PCB and the PCB for the fan)
Transmission error (between indoor unit
C1 - 06
PCB and auto grille control PCB)
Defective combination of indoor unit PCB
C6 - 01 and the PCB for the fan
C6 - 05 Indoor unit PCB abnormality
Infrared presence sensor error
CE - 01
Infrared floor sensor error
CE - 02
Infrared floor sensor error
CE - 03
Part 6 Service Diagnosis
Troubleshooting
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 PCB for the fan. If the connection is normal, replace the fan motor. If
this still cannot solve the error, replace the PCB for the fan.
An error in the detection of position of the fan motor. Check for the
connection of the connector between the fan motor and the PCB for the
fan. If the connection is normal, replace the fan motor. If this still cannot
solve the error, replace the PCB for the fan.
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.
It is detected that the grille does not operate properly. Check whether
the grille does not contact with something or the wire does not snaggle.
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 PCB for the fan.
Refer to C1-06 flowchart.
A combination of indoor unit PCB and the PCB for the fan is defective.
Check whether the capacity setting adaptor is correct and the type of
the PCB for the fan is correct.
Refer to C6-05 flowchart.
The output of the infrared presence sensor is not detected.
Check if the connector is properly connected, and if the harness
is not broken
A disconnection of the temperature correction circuit
(thermistor) of the infrared floor sensor has been detected.
Check if the connector is properly connected.
A short-circuit of the temperature correction circuit (thermistor) of the
infrared floor sensor has been detected. Check if the pins of the
connector are touching each other, and if any foreign matter on the
PCB is causing a short-circuit.
Troubleshooting by Error Code
Diagnosis
155