Daikin R407C PLUS, Service Manual

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Troubleshooting (OP: Schedule Timer) Si33-105
212 Troubleshooting R407C PLUS Series Heat Recovery System
7.4 Improper Combination of Optional Controllers for
Centralized Control
Remote
Controller
Display
MA
Supposed
Causes
!
Improper combination of optional controllers for centralized control
!
More than one master controller is connected.
!
Defect of PC board of optional controller for centralized control
Troubleshooting
Disconnect the schedule timer's
individual / combined connector
and reset the power supply for all
optional controllers for
centralized 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 centralized control
simultaneously.
Disconnect the connector for
setting master control from the
master controller, connect to
another optional controller for
centralized 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.
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 wiring adaptor for electrical
appendices. Remove the wiring
adaptor for electrical appendices
and reset the power supply for all
optional controllers for
centralized control
simultaneously.
YES
Is the wiring
adaptor for electrical
appendices
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 centralized 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 centralized 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.