York YVAA Installation Operation & Maintenance page 125

Form 201.47-ICOM1
Issue date: 17/11/2022
If any motor temp sensor is being ignored,
(selectable under Unit Set-up Mode),
that sensor's value will be displayed as
XXXXX.
The next key press displays the compressor speed in
% (0 to 100%) and the compressor heater status (ON
or OFF).
SYS 1 COMPRESSOR
The next key press indicates that the economizer valve
% open.
SYS 1 ECONOMIZER VALVE = XXX.X %
The next key press displays the condenser liquid line
subcooling and the drain valve position.
SYS 1 CONDENSER SUBCOOLING = XXX.X °F
CONDENSER DRAIN VALVE = XXX.X %
The next key press indicates the number of condenser
fans steps that are enabled (1 to 4), if the fans are not
operating on a VSD.
SYS 1
If the fans are controlled by an optional VSD, the dis-
play will indicate fan speed signal control voltage to
the VSD and the fan speed (0 to 100%).
SYS 1
VSD FAN SPEED = XX.X V = XXX %
JOHNSON CONTROLS
SPEED = XXX.X %
HEATER = XXX
CONDENSER FANS ON = X
CONDENSER FANS ON = X
The next key press indicates the state of the
optional VI solenoids where XXX indicates ON or
OFF.
SYS 1 VI STEP SOLENOID 1 = XXX
VI STEP SOLENOID 2 = XXX
The next key press displays the system run time in
days, hours, minutes, and seconds.
SYS 1 RUN TIME
XX DAYS XX HOURS XX MINUTES XX SECONDS
The next key press indicates the status of the RUN
Relay where XXX is ON or OFF, the status of the RUN
Permissive signal (flow switch/remote start/stop circuit
2 and 15 of 1TB, SYS 1) or 2 and 16 of 1TB, SYS 2)
and whether the internal software is telling the system
to run (ON or OFF).
SYS 1 RUN SIGNALS
RUN PERM = XXX
System 2 data key operation
System 2 keys function the same as the SYSTEM 1
DATA key except that it displays data for System 2.
On a 2 compressor system, the SYSTEM 3 and SYS-
TEM 4 data keys will display the following messages:
SYS 3 DATA NOT AVAILABLE
SYS 4 DATA NOT AVAILABLE
SECTION 8 - MICROPANEL
RELAY = XXX
SOFTWARE = XXX
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