Daikin VRV III RXYQ5-54PY1 Service Manual page 312

Si34-601A
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has the
remote control adapter
(KRP2A series) been
connected?
NO
Has the
schedule timer been
connected?
NO
Are there
two or more units
of central equipment
YES
with master unit setting
connectors (CN1/X1A)
connected?
NO
Reset the
power supplies of every
central equipment.
The "MA" error code has
been cleared.
Central equipment: Normal
Troubleshooting (OP: Central Remote Controller)
YES
Has
YES the Interface for

BaCnet been
connected?
NO
Has the
DMF-IF been
connected?
NO
Has the parallel
interface been
connected?
NO
Has the
Independent/
Combined use
NO
connector(CN1/X1A) of the
schedule timer been
connected?
Be sure to refer to the Master
unit central setting table.
The MA malfunction code is
displayed again.
It is supposed that the
malfunction results from
external factors (e.g. noises)
from other equipment.
Not available for combined
use with the remote control
adapter. Dismount the
remote control adapter, and
then reset power supplies of
every central equipment.
Not available for combined
use of the schedule timer and
YES
the Interface for BaCnet
Dismount either of them, and
then reset power supplies of
every central equipment.
Not available for combined
use of the schedule timer and
YES
the DMS-IF. Dismount either
of them, and then reset
power supplies of every
central equipment.
Not available for combined
use of the schedule timer and
YES
the parallel interface.
Dismount either of them, and
then reset power supplies of
every central equipment.
Dismount the Independent/
Combined use connector
YES
(CN1/X1A) of the schedule
timer, and then reset power
supplies of every central
equipment.
Integrate every central
equipment to which the
master unit central connector
is connected, and then reset
power supplies of every
central equipment.
Disconnect the master unit
central setting connector and
connect this connector to
different central equipment,
and then reset power
supplies of every central
equipment. Central
equipment, to which the
master unit central setting
connector is connected at the
time when the malfunction
code is cleared, is faulty.
Replace this equipment.

.
301