Diagnostics Menu
62 CVHE-CLD-1A
Diagnostics and Annunciation
If there are no diagnostics present, only the following
screen will be displayed under the Diagnostics Group
heading screen.
If there are any diagnostics present, the following 3
screens are displayed sequentially when the <Next>
key is pressed. The first screen is:
The second screen is:
The third screen is the chiller operating mode display
that was present at the time that the most recent
diagnostic occurred.
If there are one or more diagnostics present, the
following displays will be inserted into the display
sequence. Diagnostics will be listed in order of
occurrence from newest to oldest. Diagnostics will be
displayed on 2 screens. The two screens will vary
slightly depending on whether the diagnostic is active
or historic.
The first active diagnostic screen will be:
The sequence number will run from 1 through n (n <=
20) and number the diagnostics sequentially where
the most recent diagnostic is sequence number [01].
The possible replacements for “diagnostic type” are:
Warning Only - Reset Not Reqd (Applies to all
IFW diagnostics.)
Unit Shutdown - Reset Reqd (Applies to all MMR
diagnostics)
Unit Shutdown - Automatic Reset (Applies to all
MAR diagnostics)
The second active diagnostic display screen will
contain the diagnostic sequence number, a time and
date stamp, and a help message suggesting possible
service procedures. The second active diagnostic
display screen will be:
The time will be displayed as xx:xx am/pm.
The date will be displayed as month - date- year.
The month will use a standard 3-letter abbreviation.
The year will not be abbreviated.
Depressing the next key will advance the display to
the next diagnostic in the sequence.
The first historic diagnostic screen will be:
The definitions of diagnostic and sequence number
are the same as for the active diagnostic messages.
If <Next> is pressed the second historic diagnostic
screen is displayed. The second historic diagnostic
screen will be:
Up to 20 diagnostics will be displayed.
Clearing Diagnostics
At the end of the diagnostic menu, there will be 4
screens that allow the user to Clear/Reset the
different diagnostic groups.
If any active diagnostics are present, the following
screen will be displayed:
No Diagnostics Present
Press (Next) (Previous) To Continue
Diagnostic Report Follows
Press (Next) For More
Press (Enter) To Display Operating Mode
At Time Of LastDiagnostic or(Next)For More
[sequence number] [diagnostic]
(Next) [diagnostic type]
[sn] occurred at HH:MM xm Mon xx, 199x
[help message]
[sequence number] [Diagnostic]
Historic Only, Press (Next) For More
[sn] occurred at HH:MM xm Mon xx, 199x
Historic Only, Reset At End Of Diag Menu
Press (Enter) To Clr Active Diagnostics
And Shutdown / Reset System
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