History" Navigation - York eco2 050 Installation Operation & Maintenance

Menu Navigation and Display Description

"HISTORY" NAVIGATION

The History function group will display unit error his-
to ries and will be used to troubleshoot and diagnose
equip ment problems and/or failures (faults). The dis-
play items for the History function group are arranged
differently than the other function groups. The History
function group contains twelve (12) His to ry items. Each
History item has a description of the problem as well as
a list of the unit operating parameters (snap shot data)
when the problem oc curred.
Pressing the History key will move the display to the
Þ rst History item in the History function group. The
display will show *** HIS TO RY XX *** on the top
line of the display. XX refers to a number 1 through 12
to list the number of the fault in the memory buffer.
History Displays
*** HISTORY 01 ***
Comp Safety L/O
TROUBLE - ACTIVE
06-Mar-2000 02:10:AM
Line 2 Fault Description (Fault Name)
Line 3 Priority – Status (Alarm, Trouble, None) –
(Clear, Active)
Line 4 Date/Time (Fault Occurred)
Pressing the Back (<) and Next (>) keys will navigate
the display between the twelve History items.
Table 19 shows a list of possible system faults along
with the classiÞ cation of the fault (illustrated in the dis-
play line 2). Display Line 3 display shows the following
(see Service section for fault response details):
98
• None - No fault is recorder for History XX
• Alarm - A fault has been detected that results in the
unit shutting down
• Trouble - A fault has been detected that does not
result in the unit shutting down
• Clear - One of the following conditions has oc-
curred:
◦ A fault has been detected on an enabled sen sor
failed and the sen sor has since been disabled
◦ A fault has been detected and the cause of the
fault has ceased to be present
◦ The operator has taken an action, such as cy cling
the con trol ler pow er
• Active - The fault is still current
Each History fault display will have a point's data
list associated with it. This point's data list contains
a snapshot of the operating parameters the in stant the
fault occurred. Once a fault is selected, the points data
list can be accessed by using the Up (↑) and Down (↓
) arrow keys. This will scroll through the points data
list in Table 20.
The History function group shows faults in order,
starting with the most recent. His to ry 01 will be the
most recent fault. No fault History is eliminated once
recorded other than being "pushed off" of the end of
the list by a new fault.
When a fault is written into the fault History list, the
Alarm LED is turned on next to the dis play. The System
Alarm LED will remain on as long as an Active fault is
present in the History list.
Refer to the Service Section fault response details.
FORM 100.50-NOM1 (604)
YORK INTERNATIONAL