Daikin VRV Aurora RXLQ-TATJU Series Service Manual page 367

SiUS341802EC
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check
the indoor
unit for which UE
YES
is displayed. Is the
transmission error UE
caused on all
indoor units?
NO
Is the
power supply of
NO
the indoor unit, on which
the UE occurred,
turned ON?
YES
Has
the setting of
central control group
NO
No. been made with the
indoor unit on which the
UE occurred?
YES
Was the
NO
central control
group No. for indoor
unit changed?
YES
Troubleshooting by Error Code
Can the
YES
setting of central
control group No be
made?
NO
For
VRV systems,
can the setting of
NO
central control group No. be
made in one and the
same refrigerant
system?
YES
A
Go to the next page.
Make sure there are no
hazardous situations, and
then turn ON the power
supply.
Make correct setting of the
central control group No.
Check outdoor units to which
the refrigerant system is
connected.
Check whether or not there are
no problems with the
transmission wiring length,
types of cables and wires,
number of units connected, and
others. If no problems, replace
the indoor unit control PCB.
Reset the power supplies of
every centralized controller.
For the intelligent Touch
Controller, register the air
conditioner again while in
DIII-NET test run menu.
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