Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 111

(b) Input for external control
The external input for the indoor unit can be selected from the following input.
Input name
1 Run/Stop
2 Premission/Prohibition
3 Cooling/Heating
4 Emergency stop
5 Setting temperature shift
6 Forced thermo-OFF
7 Temporary stop
8 Silent mode
(i) In case of "Level input" setting (Factory default)
Input signal to CnT-6 or CnTA is OFF→ON ...... unit ON
Input signal to CnT-6 or CnTA is ON→OFF ...... unit OFF
Operation is not inverted.
CnT-6 or CnTA input
CnT-6 or CnTA input
Unit A
Unit A
Unit B
Unit B
Note (1) The latest operation has priority
It is available to operate/stop by remote control or central control
(ii) In case of "Pulse input" setting (Local setting)
It is effective only when the input signal to CnT-6 or CnTA is changed OFF→ON, and at that time unit operation [ON/OFF]
is inverted.
CnT-6 or CnTA input
CnT-6 or CnTA input
Unit A
Unit A
Unit B
Unit B
(c) Remote operation
(i) In case of multiple units (Max. 16 indoor units group) are connected to one wired remote control
When the R/C function setting of wired remote control for "External control set" is changed from "Individual (Factory
default)" to " For all units", all units connected in one wired remote control system can be controlled by external
operation input.
Outdoor unit Outdoor unit Outdoor unit Outdoor unit
123
Signal &
Power
External
input
123
XY
Indoor unit
0
XY
Wired remote control
Refer to [(20) (c) Remote operation input]
Refer to [(21) Operation permission/prohibition]
Refer to [(23) Selection of cooling/heating external input function]
Indoor/outdoor units stop the operation, and [E63] is displayed.
Set temperature is shifted by +2/-2°C in cooling/heating.
Unit goes thermo off.
Refer to [(22) Temporary stop input]
Outdoor unit silent mode is activated.
ON
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
Remote
Remote
control OFF
control OFF
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
Remote
Remote
control OFF
control OFF
123 123 123
123 123 123
XY XY
Indoor unit Indoor unit
Indoor unit
① ②
③ (master)
Ex. Indoor units = ＋①＋②＋③ｘ3＋......Ⓕ ≦16 units
-
Content
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
Remote
Remote
control ON
control ON
ON
OFF
OFF
ON
ON
OFF
ON
ON
OFF OFF
OFF
Remote
Remote
control ON
control ON
Refrigerant piping
123 123
XY XY XY
Indoor unit Indoor unit
③ (slave) ③ (slave)
0
110
-
'19 • PAC-T-327
ON
ON
ON
ON
OFF
OFF
Outdoor unit
123
123
XY
Indoor unit
Ⓕ