York CIDH018B21S, Service Manual

Page: 137 / 186

SM-18001-rev.1
5-7
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
(2) Remote ON/OFF 2 (Pulse Signal Input) [ Input Setting: Code (04) ]
This is an ON/OFF function from a remote place by using pulse signals. An example of a basic wiring
and time chart is shown below.
ON
X1
OFF
X2
Power
Supply
Control Circuit
Indoor Unit PCB
CN3
X1
X2
3P Connector
3
2
1
3
2
1
NOTES:
The pulse range is 200ms or more.
Wiring Diagram Example of Remote ON/OFF 2
Example: Operation Input is set to terminals 2 and 3 of CN3.
Stoppage Input is set to terminals 1 and 2 of CN3.
( )
Signal to terminals 2 & 3 of CN3 (Operation)
Signal to terminals 1 & 2 of CN3 (Stop)
NOTE:
Operation priority is given to the remote
ON/OFF signal or wired controller
signal which is given last.
Control by Wired Controller
Unit Operation
Time Chart
Time
Example: Operation Input is set to terminals 2 and 3 of CN3.
Stoppage Input is set to terminals 1 and 2 of CN3.
( )
NOTES:
1. Picking up signal within 10 seconds after power supply is turned ON is not possible due to initialization
of the components.
Do not change the signal (ON/OFF) in this period.
2. Wired Controller is required for this function.
3. If multiple indoor units are connected to the same communication cable for wired controller, input the
signal to any of these indoor units.
4. When the communication cable is not used in the twin, triple and quad combinations for simultaneous
operation, input the signal to the main indoor unit.