Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 179

Diagnosis by Remote Controller
Troubleshooting
168
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is
the outdoor
unit simultaneous on-off
multi of the indoor
unit?
YES
Are
the remote
controllers connected
to several indoor
units?
NO
Is
the remote
controller wiring jumped
between indoor
units?
NO
Is
the field setting
for pair /
twin system
correct?
YES
Do the
microcomputer
normal monitors (HAP)
on all indoor unit PC
boards
blink?
YES
Turn the power supply off once,
and back on to restart.
Does the
system conduct normal
operation?
YES
NO
YES
YES
NO
Are the wires
NO
between indoor-indoor and
indoor-outdoor correctly
connected?
YES
Is the
power supply
for the option device
connected from the terminal
block (X2M) between 1 and
2 connecting indoor
and outdoor of
the indoor
unit?
YES
Is the power supply
PC board correctly
connected?
YES
Is 220
VAC between No.1 and 2
of X2M terminal
(indoor unit)?
NO
Are
the wires
between indoor-indoor
NO
and indoor-outdoor
correctly
connected?
YES
SiBE26-701
Check the setting for
number of indoor units
connected to the
simultaneous on-off
multi of the indoor unit.
Adopt only one of the
remote controllers.
Remove the jumper.
(Integrated control in the
same circuit is not
allowed.)
Connect correctly.
NO
Connect correctly.
NO
Connect correctly.
NO
Connect correctly.
YES
Check the power supply
system inside the indoor unit.
Could be incorrect wiring.
Check again.
NO
Connect correctly.
Replace the indoor unit
PC board.
Normal
Troubleshooting