York YHAU-CW Manual page 110

SECTION 6 – OPERATION
The Operation Hours section shows the following:
• Operation: displays how long the chiller has
been running.
• Sol. Pump: displays how long the solution pump
has been running.
• Ref. Pump: displays how long the refrigerant
pump has been running.
The frequency of failures, alarms, and purges is shown
in the Frequency section:
• Operation: displays how many times the chiller
has started using the OPER. button or the remote
start signal
• Start: displays how many times the heat source
(steam) input has started.
• Failure: displays how many times the system has
experienced a failure.
• Alarm: displays how many times an alarm has
been activated.
• Purge: displays how many times the purge sys-
tem has started automatically.
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To move to the Trend screen, press the Trend button at
the upper right of the screen.
The History Menu section on the right side of the screen
gives you access to the Operation History, Alarm His-
tory and to the Failure History screens. It contains four
buttons:
• Hourly Operation: move to the Hourly Opera-
tion History screen
• Minutely Operation: move to the Minutely Op-
eration History screen
• Failure: move to the Failure History screen
• Alarm: move to the Alarm History screen
The Maintenance Information section on the right side
of the screen gives you access to the detailed main-
tenance information. If the maintenance interval has
passed, the color of the button lettering changes to red.
It contains two buttons:
• Solution Analysis and Control Panel Parts Re-
place: move to the Solution Analysis and Control
Panel Parts Replacement screen
• Solution Pump Overhaul and Refrigerant
Pump Overhaul: move to the Solution Pump
Overhaul and Refrigerant Pump Overhaul screen
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
JOHNSON CONTROLS