System Is Not Set Yet - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller

2.41 System is not Set yet

UF
Remote
Controller
Display
Applicable All models of indoor unit
Models RQYQ-PY1B
Method of Error On check operation, the number of indoor units in terms of transmission is not corresponding to
that of indoor units that have made changes in temperature.
Detection
Error Decision The error is determined as soon as the abnormality aforementioned is detected through
checking the system for any erroneous connection of units on the check operation.
Conditions
Supposed
Causes
Troubleshooting
176
Improper connection of transmission wiring between indoor-outdoor units and outdoor-
outdoor units
Failure to execute check operation
Defective indoor unit PCB
Stop valve is not opened
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Are the stop
valves opened?
YES
Is the check
operation
carried out?
YES
Is indoor - outdoor
and outdoor - outdoor
unit transmission
wiring normal?
YES
NO
Is indoor-outdoor and
NO
outdoor-outdoor unit
transmission wiring
normal?
NO
NO
SiBE341027
Open the stop valve.
YES
Replace the indoor unit PCB.
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.
Wiring check operation may
not have been carried out
successfully.
Service Diagnosis