Daikin RXYQ96PYDN Service Manual page 451

Troubleshooting by Indication on the Remote Controller
Troubleshooting
436
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Diagnosis Flow 3
Check 3 Check 4
Check
if the outdoor
unit PC board is replaced
with PC board for
spare parts.
YES
Is a correct substitute
PC board procured?
YES
Check if
the spare parts PC board
setting is correct.
YES
Diagnosis Flow 4
Check 3 Check 4
Is a single unit of
model REMQ
installed?
NO
The connection
wiring of multi outdoor
units is broken or
disconnected.
NO
Check
if the unit is not
NO
connected to outdoor
units of different
models.
YES
NO
NO
YES
YES
SiUS34-801A_b
NO
Replace the main PC board of the
outdoor unit.
Check the model of the outdoor
unit.
Replace it with the correct
substitute PC board.
Correct the setting to reset the
power.
Replace the spare parts PC board.
Procure the correct model of unit.
(The REMQ model is dedicated to
multi connections.)
Correct the connection wirings.
Replace the main PC board (A1P).
Troubleshooting