Start Inhibit Messages - Johnson Controls York YD Manual

Start inhibit messages

Table 5: Start inhibit messages
Message
Discharge Valve #1 -
Open
Discharge Valve #2 -
Open
Motor #1 – Anti-recycle The chiller (both compressors) is inhibited from starting because compressor #1 motor is
Motor #2 – Anti-recycle The chiller (both compressors) is inhibited from starting because compressor #2 motor is
Motor #1 – Current >15%
FLA
Motor #2 – Current >15%
FLA
Vanes #1 – Motor Switch
Open
Vanes #2 – Motor Switch
Open
Model YD Mod D with OptiView Control Center
Description
The chiller (both compressors) is inhibited from starting because compressor #1 discharge
valve is not closed. This start inhibit is released when the valve has fully closed.
The chiller (both compressors) is inhibited from starting because compressor #2 discharge
valve is not closed. This start inhibit is released when the valve has fully closed.
in the 30 minute anti-recycle period and compressor #2 is unable to run. This start inhibit is
released when the 30 minute timer expires.
in the 30 minute anti-recycle period and compressor #1 is unable to run. This start inhibit is
released when the 30 minute timer expires.
The chiller (both compressors) is inhibited from starting because a motor current of >15%
FLA was detected on compressor #1 while it was not running. This inhibit is set instantly with
no delay and the oil pump is started as soon as the motor current is detected. The starting
frequency for the variable speed drive oil pump is 45 Hz. This inhibit is released when the
compressor #1 motor current decreases to < 15% FLA and the Clear Fault button is pressed
on the Home screen. A complete 150 second coastdown is performed when after the inhibit
is released.
The chiller (both compressors) is inhibited from starting because a motor current of >15%
FLA was detected on compressor #2 while it was not running. This inhibit is set instantly with
no delay and the oil pump is started as soon as the motor current is detected. The starting
frequency for the variable speed drive oil pump is 45 Hz. This inhibit is released when the
compressor #1 motor current decreases to < 15% FLA and the Clear Fault button is pressed
on the Home screen. A complete 150 second coastdown is performed when after the inhibit
is released.
The chiller (both compressors) is inhibited from starting because the pre-rotation vanes
of compressor #1 are not fully closed (Vane motor switch is open) and compressor #2 is
unable to run. This inhibit is released when the vanes have fully closed (Vane motor switch
has closed).
The chiller (both compressors) is inhibited from starting because the pre-rotation vanes of
compressor #2 are not fully closed (Vane motor switch is open) and compressor #1 is unable
to run. This inhibit is released when the Vanes have fully closed (Vane motor switch has
closed).
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