External On/Off Input - Daikin VRV - WII Service Manual

Field Setting

External ON/OFF input

This input is used for "ON / OFF operation" and "Protection device input" from the outside. The
input is performed from the T1-T1 terminal of the operation terminal block (X1A) in the electric
component box.
Setting Table
Fan Speed Changeover When Thermostat is OFF
By setting to "Set Fan Speed", you can switch the fan speed to the set fan speed when the heating
thermostat is OFF.
∗
take the setup location into consideration.
Setting Table
Auto Restart after Power Failure Reset
For the air conditioners with no setting for the function (same as factory setting), the units will be left
in the stop condition when the power supply is reset automatically after power failure reset or the
main power supply is turned on again after once turned off. However, for the air conditioners with
the setting, the units may start automatically after power failure reset or the main power supply
turned on again (return to the same operation condition as that of before power failure).
For the above reasons, when the unit is set enabling to utilize "Auto restart function after power
failure reset", utmost care should be paid for the occurrence of the following situation.
Caution 1. The air conditioner starts operation suddenly after power failure reset or the
2. In the service work, for example, turning off the main power switch during the
104
Setting
Mode No.
Switch No.
12 (22) 1
Since there is concern about draft if using "fan speed up when thermostat is OFF", you should
Mode No.
12 (22)
main power supply turned on again. Consequently, the user might be
surprised (with question for the reason why).
unit is in operation, and turning on the switch again after the work is
completed start the unit operation (the fan rotates).
F2 T1 T2
Forced stop
Input A
Setting
Operation by input of the signal A
Position No.
ON: Forced stop (prohibition of using the remote
01 controller)
OFF: Permission of using the remote controller
OFF → ON: Permission of operation
02
ON → OFF: Stop
ON: Operation
03 OFF: The system stops, then the applicable unit
indicates "A0". The other indoor units indicate "U9".
First Code No.
3
Second Code No.
01
02
SiUS30-604
Setting
LL Fan Speed
Set Fan Speed
Test Operation