Uf" System Is Not Set Yet - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
UF
4.56 " " System is not Set yet
UF
Remote
Controller
Display
Applicable All indoor unit models
RTSQ8P~16P (Outdoor Unit)
Models
Method of 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.
Malfunction
Detection
Malfunction The malfunction is determined as soon as the abnormality aforementioned is detected through
checking the system for any erroneous connection of units on the check operation.
Decision
Conditions
Supposed
Causes
Troubleshooting
Note: Wiring check operation may not be successful if carried out after the outdoor unit has been off
for more than 12 hours, or if it is not carried out after running all connected indoor units in the
fan mode for at least an hour.
Troubleshooting
Improper connection of transmission wiring between indoor-outdoor units and outdoor-
outdoor units
Failure to execute check operation
Defect of indoor unit PCB
Stop valve is left in closed
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
Troubleshooting by Indication on the Remote Controller
NO
Is indoor-outdoor and
NO
outdoor-outdoor unit
transmission wiring
normal?
NO
NO
Open the stop valve.
YES
Replace the indoor unit PCB.
After fixing the incorrect
wiring, push 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.
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