Batch Start/Stop (On/Off) Function - Toshiba Super MMU-AP0091H Service Manual

3. Batch start/stop (ON/OFF) function

This function is provided to start/stop collectively all the indoor units connected to the same system by using
switches on the interface board of the header unit.
<Operation procedure>
Power ON
Set up the operation mode of the remote controller.
(If it is not set up, the operation continues with the current mode.)
(FAN/COOL/HEAT)
Set on the interface P.C. board of the header unit SW01 to [2],
Sw02 to [7], and SW03 to [1] respectively. ([CH ] is displayed
on 7-segment display [A].)
Push SW04 on the interface P.C. board of the header unit for
2 seconds or more.
The indoor unit to be started operates.
Push the push-switch SW05 on the interface P.C. board of the
header unit for 2 seconds or more.
After test operation, return the rotary switches SW01, SW02,
and SW03 on the interface P.C. board of the header unit to
[1], [1], [1] respectively.
Be sure to turn on power at the indoor side before power-ON of outdoor unit.
If an error is already displayed under condition of
SW01 [1], SW02 [1], SW03 [1], return the status to
normal one according to troubleshooting and then
execute a test operation.
The unit which is not given with priority by heating
priority control, cooling priority control, and selection
of cooling or heating mode is not operated.
In this case,
remote controller.
Start
Operation check
Stop
End
116
or is displayed on the
If the discharge temperature does not change
(
though COOL or HEAT has been set up from the
remote controller, misconnection is considered.
)