Panasonic Urban Multi MX1R Series, Service Manual, Page: 572 / 643

PACD011001C2 Troubleshooting (OP: Schedule Timer)
Troubleshooting UM Combination “MA1R Series” Using R-407C 551
7.4 Improper Combination of Optional Controllers for Centralised Control
Remote Controller
Display
MA
Supposed Causes
„
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
Disconnect the schedule timer's
individual / combined connector
and reset the power supply for all
optional controllers for centralised
control simultaneously.
Arrange so that the connector for
setting master control is connected
to one controller for centralized
control and reset the power supply
for all optional controllers for
centralised control simultaneously.
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 centralised control
again. The controller connected by
the connector for setting master
control when the malfunction is
cleared is defective and must be
replaced.
Reset the power supply for all
optional controllers for
centralized control
simultaneously.
YES
YES
NO
Is the schedule
timer connected?
Are
there two or
more optional controllers
for centralized control connected
with the connector for
setting master
control?
YES
Is the schedule
timer's individual/combined
connector connected?
NO
NO
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.
YES
Is the "BMS
interface adaptor for
individual and unified control,
for unified group"
connected?
NO
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.
YES
Is a data station connected?
NO
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
Is a parallel interface
connected?
NO
If the malfunction is still not cleared:
(VF077)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.