Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 188

Troubleshooting by Remote Controller
Troubleshooting
Note:
*1. Check the correct wiring "indoor-outdoor" and "outdoor-outdoor" by Installation Manual.
What is Auto Address?
This is the address automatically assigned to indoor units and outdoor units after initial power
supply upon installation, or after executing rewiring (Keep pressing the
more than 4 seconds).
178
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is electricity being
introduce for the first
YES
time after installation
or after an indoor or
outdoor unit PCB has
been replaced?
NO
Is indoor - outdoor and
outdoor - outdoor unit
transmission wiring
normal? (*1)
YES
Press and hold the RESET
button on the outdoor unit
PCB for 5 seconds.
Does a error reoccur?
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
UH
Does a " " error
occur for all indoor
units in the
system?
YES
Does a error occur
even after 12 minutes
elapses from the time
when electricity is
introduced to indoor
and outdoor units?
YES
NO
NO
YES
NO
SiBE341027
NO
Normal
After fixing the incorrect
wiring, press and hold the
RESET button on the master
outdoor unit PCB for 5
seconds.
∗ The unit will not run for up to
12 minutes.
Normal
Install the DIII-NET extension
adaptor.
Replace the indoor unit PCB.
Replace the outdoor unit PCB.
RESET button for
Service Diagnosis