Daikin E Series, Service Manual

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SiAU18-715 Troubleshooting for SkyAir Indoor Unit
Troubleshooting 347
5.14 Malfunction of Field Setting Switch
Remote
Controller
Display
UA
Applicable
Models FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Malfunction
Decision
Conditions Incorrect field setting
Supposed
Causes
„
Indoor-Outdoor (BP) transmission line
„
Faulty remote controller wiring
Troubleshooting
Does the system conduct
normal operation?
NO
Do the
microcomputer
normal monitors HAP on all
indoor unit PCB
blink?
NO
NO
Is the field
setting for pair / twin
system correct?
YES
YES
YES
YES
NO
YES
Turn the power supply off once,
and back on to restart.
NO
Are the wirings
between indoor and BP
unit correctly
connected?
Are the wirings
between indoor and BP
unit correctly
connected?
NO
YES
Is 220 ~ 240
VAC between No.1 and
3 of X2M terminal
(indoor unit)?
YES
Is the
remote controller
connected to one or more
indoor units?
NO
YES
Is the
remote controller
wiring jumped between
indoor units?
NO
(Q0544)
Connect the remote controller
correctly.
Remove the jumper.
Set correctly.
Connect correctly.
Check the power supply system
inside the indoor unit.
Could be incorrect wiring.
Check again.
Connect correctly.
Replace the indoor unit PCB.
Normal
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.