Daikin RZQ100B8V3B Service Manual page 249

ESIE05-03
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
Is the
remote controller YES
connected to more than
one indoor
unit?
NO
Is
NO
the outdoor unit
used for Twin
system?
YES
Is the
NO
setting of
Pair/Twin/Triple
set correctly?
YES
Are the
microcomputer
normal monitors (HAP) of
all indoor unit PCB
flashing?
YES
Are the
transmission
normal montiors (HBP) of
all indoor unit PCB
flashing?
YES
Turn the power off once, then
back on, and restart operation.
NO
Operating normally?
YES
Is the
indoor-indoor and
NO
indoor-outdoor
jumper correctly
connected?
YES
Is
the power
supply PCB correctly
connected?
NO
YES
Is there
220-240 VAC
between No.1 and No.3
of X2M (indoor
Unit)?
YES
Is the
indoor-indoor
and indoor-outdoor
jumper correctly
connected?
YES
Error Codes: System Malfunctions
Connect the remote controller
correctly.
Check setting "No. of
Connected Twin System Indoor
Units" of indoor unit.
Set correctly.
NO
Connect correctly.
NO
Connect correctly.
NO
Replace the transformer.
Wiring could be incorrect,
recheck.
NO
Connect correctly.
Indoor unit PCB replacement.
Operates normally.
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