Unit Data; Vsd Data - York YCAV0569 Installation Operation & Maintenance

UNIT DATA

Evaporator Leaving and Return Chilled Liquid
Temps
UNIT CHILLED LIQUID LEAVING = XXX.X °F
ENTERING = XXX.X °F
This message indicates the leaving and entering chilled
liquid temperatures at the time of the fault.
Ambient Air Temperature
UNIT
OUTSIDE AMBIENT AIR TEMP = XXX.X °F
This message indicates the ambient air temperature at
the time of the fault.
Load / Unload Timers
UNIT LOAD TIMER = XXX SEC
UNLOAD TIMER = XXX SEC
This message indicates remaining time on the load and
unload timers at the time of the fault.
Chilled Liquid Temperature Error and Rate of
Change
UNIT TEMP ERROR = XXX.X °F
This message indicates the temperature error between
the actual and the programmed setpoint at the time of
the fault and the rate of temperature change.
Programmed Lead System Selection and
Flow Switch Status
UNIT LEAD SYSTEM NUMBER = X
FLOW SWITCH = XXX
This message indicates the designated lead system at the
time of the fault and whether the flow switch was ON
(Closed) or OFF (Open) at the time of the fault.
JOHNSON CONTROLS
HISTORY KEY (CON'T)
RATE = XXX.X °F/M
Evaporator Pump and Evaporator Heater
Status
UNIT EVAP PUMP RUN = XXX
EVAP HEATER = XXX
This message indicates the status of the evaporator pump
and the evaporator heater at the time of the fault. XXX
indicates ON or OFF.
Active Remote Control Status
UNIT ACTIVE REMOTE CONTR0L = XXXXXX
This message indicates whether the system was operat-
ing under active remote control (RCC, ISN, LOAD,
TEMP, or SOUND) or standard control (NONE) at the
time of the fault.
UNIT SOUND LIMIT
ISN = XXX
This message indicates that sound limiting was in ef-
fect, the amount, and whether it was local or remotely
limited.

VSD DATA

VSD Actual and Command Frequency
VSD FREQUENCY
COMMAND = XXX.X HZ
This message indicates the VSD actual operating
frequency and the command frequency at the time of
the fault. Actual and command may not match due to
load/unload timers, limitation of 1 Hz per load/unload
increment, and to allowable acceleration/deceleration
of the motor.
VSD COMP 1 = XXX AMPS
COMP 2 = XXX AMPS
Compressor AMPS and %FLA
The message indicates the compressor %FLA and cur-
rents for systems 1 and 2 at the time of the fault.
FORM 201.21-NM2 (616)
LOCAL = XXX %
REMOTE = XXX %
ACTUAL = XXX.X HZ
= XXX %FLA
= XXX %FLA
207
8