Daikin R-410A Service Manual page 215

ESIEN05-04
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
YES
control connected to
more than
one indoor
unit?
NO
Is the
NO
outdoor unit used for
Twin system?
YES
Is the setting
NO
of Pair/Twin/Triple set
correctly?
YES
Are the
microcomputer normal
NO
monitors (HAP) of all
indoor unit PCB
flashing?
YES
Are the
transmission normal
NO
montiors (HBP) of all
indoor unit PCB
flashing?
YES
Turn the power off once, then
back on, and restart operation.
NO
Operating normally?
YES
Error Codes: System Malfunctions
Is the
indoor-indoor and
NO
indoor-outdoor jumper
correctly
connected?
YES
Is the power
NO
supply PCB correctly
connected?
YES
Is there
220-240 VAC
NO
between No.1 and No.3 of
X2M (indoor Unit)?
YES
Is the
indoor-indoor and
NO
indoor-outdoor jumper
correctly
connected?
YES
Connect the remote controller correctly.
Check setting "No. of Connected Twin
System Indoor Units" of indoor unit.
Set correctly.
Connect correctly.
Connect correctly.
Replace the transformer.
Wiring could be incorrect, recheck.
Connect correctly.
Indoor unit PCB replacement.
Operates normally.
4–9
1
3 3
4
5