Daikin VRV IV-S RXTQ-TAVJU Series, Service Manual

Page: 221 / 272

SiUS331604E Troubleshooting by Error Code
Service Diagnosis 208
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
YES
YES
After fixing incorrect wiring,
press and hold the BS3
button on the master outdoor
unit PCB for 5 seconds.
∗
The unit will not run for up to
12 minutes.
Normal
NO
YES
NO
Normal
NO
Does an error occur?
Mount the DIII-NET expander
adaptor.
YES
Disconnect the
outdoor-outdoor unit
transmission wiring to
create the one-system
status, and then check
whether or not the
system is normal.
NO
Does a
UH
error
occur for all indoor
units in the system?
YES
NO
YES
Replace the indoor unit PCB.
Replace the outdoor main
PCB (A1P).
Press and hold the BS3
button on the outdoor unit
PCB for 5 seconds
Does
an error
occur even after
12 minutes elapses
from the time when
electricity is introduced
to indoor and
outdoor
units?
Is
electricity
being introduced
for the first time after
installation or after an indoor
or outdoor unit PCB
has been
replaced?
Is
indoor - outdoor
and outdoor - outdoor unit
transmission wiring
normal? (
∗
1)
∗
1: Refer to installation manual for correct "indoor unit and outdoor unit connection
wiring" and "outdoor unit and outdoor unit connection wiring".
∗
2: Automatic address refers to the automatic designated address of indoor unit and
outdoor unit when connected to the power after installation or wiring replacement
(with BS3 pressed for more than 4 seconds).