Daikin Super Multi Plus E-Series Service Manual page 405

SiEN18-622
Troubleshooting
NO
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has the
indoor or
outdoor unit PC
board been replaced, or
YES
has the indoor - outdoor
or outdoor - outdoor
unit transmission
wiring been
modified?
NO
All
indoor unit remote
NO
controls of the same
refrigerant system
display"U4."
YES
Reset the power supply.
Outdoor
unit PC board NO
microcomputer monitor
(HAP) blinks.
YES
Operation ready
lamp (H2P) is
blinking.
YES
Lamp does
YES
not go off for 12 minutes
or more.
NO
Is
indoor - outdoor
NO
and outdoor - outdoor
unit transmission
wiring normal?
YES
Troubleshooting for Outdoor Unit
Is indoor-
outdoor and outdoor YES
-outdoor unit transmission
wiring normal?
NO
The
voltage between
NO
terminals L1 and N of the
outdoor unit PC board
is 220~240 V.
YES
The fuse on the
YES
outdoor unit's PC board
is burnt.
NO
The
NO
secondary voltage of
the transformer is
about 22~24 V.
YES
Push and hold the RESET
button on the master outdoor
unit PC Board for 5 seconds.
* The unit will not operate for
up to 12 mintutes
Replace the indoor unit
PC board.
Fix the indoor/outdoor unit
transmission wiring.
Supply 220~240 V.
Replace the fuse.
Replace the transformer.
Replace outdoor unit PC
board (A1P).
Push and hold the RESET
button on the outdoor unit
PC board for 5 seconds.
Fix the indoor/outdoor unit
transmission wiring.
Replace the outdoor unit
PC board (A1P).
(V3187)
393