York IDM030B21E Series, Service Manual

Page: 99 / 144

SM-16005-rev.2
5-11
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
5.4.1.2 Power Supply ON/OFF 1 (Automatic Operation When Power Supply Is ON)
This function is utilized to run/stop the unit by turning ON/OFF the power supply. When this function
is utilized in the condition that there is no person to operate the unit, monitor the system for disaster
prevention. When using this function, refer to operation for Wired Controller item (30) “Power Supply ON/
OFF (Automatic Operation When Power Supply Is ON) (d1) for the setting.
NOTE:
1. The unit is stopped even when the power supply is turned ON/OFF due to power failure. If power
failure occurs during the stoppage of the unit, the operation is restarted after the power supply is
restored.
2. Wired Controller is required for this function.
3. When the communication cable is not used in the twin, triple and quad combinations for simultaneous
operation, set this function only to the main indoor unit.
5.4.1.3 Power Supply ON/OFF 2 (Restarting Function After Power Failure)
This function is utilized to restart the unit operation automatically when the power supply is restored after
the power failure over 2 seconds. In case of a power failure for 2 seconds or less, the system resumes
normal operation after a 3-minute compressor delay.
When this function is utilized in the condition that there is no person to operate the unit, monitor the system
for disaster prevention.
NOTE:
1. If power failure occurs during the stoppage of the unit, the unit remains stopped after the power supply is
restored.
2. Wired Controller is required to be connected for setting this function.
3. When the communication cable is not used in the twin, triple and quad combinations for simultaneous
operation, set this function only to the main indoor unit.