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Troubleshooting (OP: Schedule Timer)
7.4
PACD011001C2
Improper Combination of Optional Controllers for Centralised Control
Remote Controller
Display
Supposed Causes
MA
„ Improper combination of optional controllers for centralised control
„ More than one master controller is connected.
„ Defect of PC board of optional controllers for centralised control
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the schedule
timer's individual/combined
connector connected?
YES
Are any other
optional controllers for
centralised control
connected?
NO
NO
Other optional controllers for
centralised control cannot be used
YES in combination when the schedule
timer's individual / combined
connector is connected.
Disconnect the connector, connect
the connector for setting master
control to one of the optional
controllers, and reset the power
supply for all optional controllers
for centralised control
simultaneously.
Reset the power supply for the
schedule timer.
Is the "BMS
interface adaptor for
individual and unified control,
for unified group"
connected?
YES
NO
Is a data station connected
YES
NO
Is a parallel interface
connected?
YES
NO
Are
there two or
more optional controllers
for centralised control connected
with the connector for
setting master
control?
Cannot be used in combination
with a "BMS interface adaptor for
individual and unified control, for
unified group". Remove them and
reset the power supply for all
optional controllers for centralised
control simultaneously.
Schedule timer and data station
cannot be used in combination.
Disconnect either the schedule
timer or data station and reset the
power supply for all optional
controllers for centralised control
simultaneously.
Schedule timer and parallel
interface cannot be used in
combination. Disconnect either the
schedule timer or parallel interface
and reset the power supply for all
optional controllers for centralised
control simultaneously.
YES
Arrange so that the connector for
setting master control is connected
to one controller for centralised
control and reset the power supply
for all optional controllers for
centralised control simultaneously.
If the malfunction is still not cleared:
Disconnect the connector for
setting master control from the
master controller, connect to
another optional controller for
centralised control and
simultaneously reset all optional
controllers for centralized control
again. The controller connected by
the connector for setting master
control when the malfunction is
cleared is defective and must be
replaced.
NO
Reset the power supply for all
optional controllers for
centralised control
simultaneously.
(VF077)
398
Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C