York IDM030B21E Series, Service Manual

Page: 93 / 144

SM-16005-rev.2
5-5
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
5.4.1 External Input and Output Settings
On the Indoor Unit Printed Circuit Board (PCB), there are two input terminals (CN3) to receive external
signals and three output terminals (CN7, CN8
5
) to send signals out. Functions shown in these tables are
available when setting input and output terminals.
Input and Output Number Display and Connectors
Input and Output Settings and Display Codes
Code Indicated Input Output
00 Not set Not set
01 Room Thermostat (for Cooling) Operation
02 Room Thermostat (for Heating) Alarm
03 Remote ON/OFF 1 (Level) Cooling
04 Remote ON/OFF 2 (Operation) Thermo-ON for Cooling
05 Remote ON/OFF 2 (Stoppage) Heating
06 Forbidding Remote Control after Manual Stoppage Thermo-ON for Heating
07 Remote Cooling / Heating Change Total Heat Exchanger
09 Setback Temperature N/A
NOTES:
1. Change the optional setting after waiting at least three minutes elapsed time after start-up.
2. Do not set the elevating grille for the total heat exchanger.
3. Record the setting conditions for each input and output in the “Setting” column of the table.
4. When PSC-5RA (optional) is used for connection between the auxiliary heater and indoor unit, DO NOT
connect connector (CN7) to indoor unit PCB. Otherwise, fire may result.
Use another PSC-5RA (optional) for input/output integration functionality.
5. Output terminal (CN8) is no longer available for indoor unit produced in February 2018 or later.
Input Number Display
Port
Factory Setting
Setting
Input/Output Indication Setting Item Indication
Input 1 CN3 1-2 Remote ON/OFF 1 (Level) 03
Input 2 CN3 2-3 Prohibiting Remote Control after Manual Stoppage 06
Output 1 CN7 1-2 Operation 01
Output 2 CN7 1-3 Alarm 02
Output 3 CN8
5
1-2 Thermo-ON for Heating 06