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114
YORK INTERNATIONAL
pumps on 50 Hz Models YIA-10E3 – YIA-14F3) Pumps
Motor Coolant Float Switch (2F) is open.
REFRIGERANT TEMP BELOW ACCEPTABLE LIMITS
Indicates the solution pump is prevented from starting
or a manual dilution cycle is inhibited because the re-
frigerant temperature (as measured by Thermistor RT8)
is less than or equal to 34°F (1.1°C).
UNIT SWITCH NOT IN STOP/RESET POSITION
Indicates the selected system pump (except purge) can-
not be started or a manual dilution cycle cannot be initi-
ated because the UNIT switch is not in the STOP/RE-
SET position.
DILUTION CYCLE CURRENTLY IN PROGRESS
Indicates a manual dilution cycle cannot be performed
or the selected pump cannot be operated because a
dilution cycle is in progress.
PURGE PUMP OVERLOADS OPEN
Indicates the purge pump is prevented from starting
because the purge pump overload (3OL) is open. The
overload must be manually reset.
MANUAL OPERATION IN SERVICE MODE ONLY
Indicates a selected system pump (except purge pump)
cannot be started or a manual dilution cycle cannot be
initiated because the Control Center is in LOCAL or
REMOTE operating mode. System pumps (except purge)
can be manually operated in SERVICE mode only and
manual dilution cycles can be initiated in SERVICE mode
only.
AUTOMATIC SOLENOID CONTROL ACTIVE
Indicates the Stabilizer Refrigerant Solenoid Valve
(2SOL) or Refrigerant Level Solenoid Valve (3SOL) can-
not be manually controlled because “Automatic Solenoid
Control” has been selected. These solenoid Valves can
be manually controlled only when “Manual Solenoid
Control” is selected. Instructions for selecting the desired
control mode are contained in the IsoFlow Control Cen-
ter “Service” manual, Form 155.16-M3 in “Special Pro-
gramming Procedures” section. This selection should be
performed by a qualified service technician only.
Содержание MILLENNIUM YIA-ST-1A1
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