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YORK INTERNATIONAL
111
FORM 155.16-O3
the unit has shut down on “Low Water Temp”,
then the criterion for that restart applies.
SUN 12:00 AM SYSTEM CYCLING – AUTO START
A remote device (Energy Management System, time
clock, etc.) connected to the REMOTE/LOCAL cycling
input (TB2-
1
and
13
) of the digital input board has
shut down the unit. Relay contacts or switch connected
from
1
to
13
will cycle unit in LOCAL or REMOTE
mode. When the contacts are closed, the unit runs. When
the contacts open, the unit shuts down.
SUN 12:00 AM HW VALVE LOADED ABOVE 10%
(Hot Water Fed Unit Only)
The unit is shut down for any reason and the hot water
valve is at a position that is greater than or equal to 10%
position. Hot water fed units (Micro Board program
jumper JP1 is OUT) are not allowed to start until the hot
water valve position is <10%.
SUN 12:00 AM STEAM VALVE LOADED ABOVE 10%
(Steam Fed Unit Only)
The unit is shut down for any reason and the steam valve
is at a position that is greater than or equal to 10%. Steam
fed units (Micro Board program jumper JP1 is IN) are
not allowed to start until the steam valve position is <10%.
SUN 12:00 AM MULTI-UNIT CYCLING – AUTO START
A remote device (Energy Management System, time
clock, multi-unit sequencer, etc.) connected to the
MULTI-UNIT cycling input (TB2-
1
and
9
) of the
digital input board has shut down the unit. Relay con-
tacts or switch connected from
1
to
9
will cycle unit
in LOCAL or REMOTE mode. When the contacts are
closed, the unit runs. When the contacts open, the unit
shuts down.
SUN 12:00 AM INTERNAL CLOCK – AUTO START
The operator-programmed daily stop schedule (DAILY
SCHEDULE setpoint) has shut down unit. The unit will
automatically restart when the operator-programmed
daily start schedule initiates a start. It can be overridden
by pressing the UNIT switch to START position.
DILUTION CYCLE INTERRUPTION
MESSAGES
DILUTION INTERRUPTED – REF LEVEL SW
Displayed when the refrigerant level float switch opens
during a dilution cycle. The opening of this switch during
a dilution cycle terminates the dilution cycle.
DILUTION INTERRUPTED – CH WATER FLOW SW
Displayed when the chilled water flow switch opens dur-
ing a dilution cycle. The opening of the flow switch dur-
ing a dilution cycle, terminates the dilution cycle. If the
flow switch recloses, another 6-minute dilution cycle is
initiated.
DILUTION INTERRUPTED – COND WATER FLOW SW
Displayed when the condenser water flow switch opens
during a dilution cycle. The opening of the flow switch
during a dilution cycle, terminates the dilution cycle. If
the flow switch recloses, another 6-minute dilution cycle
is initiated.
WARNING MESSAGES
Coincident with the occurrence of each of the following
warning conditions, K7 relay contacts (relay output board
TB4-89 & 90) close to sound an external audible alarm
(supplied by others). The alarm is silenced by pressing
the WARNING RESET key in any operating mode. Af-
ter the alarm has been silenced, the warning message
will be displayed until the condition that caused the alarm
reaches the reset threshold and the WARNING RESET
key is pressed in SERVICE mode. This clears the WARN-
ING message. If the condition that caused the warning
reaches the reset threshold, the alarm and warning
message are automatically cleared when entering SYS-
TEM RUN upon starting the unit.
If multiple warning conditions exist, the appropriate
“Warning Messages” will scroll on the display while the
STATUS key is being pressed. Each warning message
will be displayed for 2 seconds and will scroll from the
most recent to the oldest occurrence.
WARNING – LOW REFRIGERANT TEMPERATURE
Indicates the refrigerant temperature decreased to
35.5°F (1.9°C). The unit will be inhibited from further load-
ing (the load signal will be allowed to decrease or re-
main at its present level, but will not be allowed to in-
Summary of Contents for MILLENNIUM YIA-HW-14F3
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