Daikin VRV III REYQ8PY1, Service Manual

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Troubleshooting by Indication on the Remote Controller Si37-701
326 Troubleshooting
Troubleshooting
NO
YES
YES
YES
NO
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Diagnosis Flow 3
Diagnosis Flow 4
Replace the main PC board of the
outdoor unit.
Check the model of the outdoor
unit.
Correct the setting to reset the
power.
Replace the spare parts PC board.
Check
if the unit is not
connected to outdoor
units of different
models.
Check
if the outdoor
unit PC board is replaced
with PC board for
spare parts.
Check if
the spare parts PC board
setting is correct.
Check 3
Check 3 Check 4
Check 4
NO
YES
Is a correct substitute
PC board procured?
Replace it with the correct
substitute PC board.
NO
YES
Correct the connection wirings.
Replace the main PC board (A1P).
The connection
wiring of multi outdoor
units is broken or
disconnected.
YES
NO
Is a single unit of
model REMQ
installed?
Procure the correct model of unit.
(The REMQ model is dedicated to
multi connections.)