Uf" System Is Not Set Yet - Daikin FCQ18PVJU Service Manual

SiUS28-902_a
UF
3.42 " " System is not Set yet
UF
Remote
Controller
Display
Applicable
All models of indoor units
Models RZQ18~30PVJU
Method of
On check operation, the number of indoor units in terms of transmission is not corresponding to
Malfunction that of indoor units that have made changes in temperature.
Detection
Malfunction The malfunction is determined as soon as the abnormality aforementioned is detected through
Decision checking the system for any erroneous connection of units on the check operation.
Conditions
 Improper connection of transmission wiring between indoor-outdoor units and
Supposed
Causes
 Failure to execute check operation
 Defect of indoor unit P.C.B.
 Stop valve is left in closed
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
outdoor-outdoor units
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts could be damaged.
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 outdoor-outdoor
NO
unit transmission
wiring normal?
NO
NO
Open the stop valve.
YES
Replace indoor unit P.C.B.
After fixing incorrect wiring,
push and hold the RESET
button on the master outdoor
unit P.C.B. 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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