Trane CCUN 205-211 User Manual Page 33

Chiller control system.
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A Valid Configuration is
Present
Err4: UnHandled
InterruptRestart Timer:
[3 sec countdown timer]
Err5: Operating System
ErrorRestart Timer:
[3 sec countdown timer]
Err6: Watch Dog Timer
ErrorRestart Timer:
[3 sec countdown timer]
Err7: Unknown ErrorRestart
Timer:
[3 sec countdown timer]
Err8: Held in Boot by User Key
Press
[3 sec countdown timer]
Converter Mode
Programming Mode
Design Note: In general, all failures/comm loss due to CH530 components should have a latching diagnostic and effect. All customer inputs failures (out of range, etc) are
generally nonlatching.
CG-SVU02B-E4
Diagnostics
A valid configuration is present in the MP's nonvolatile memory. The configuration is a set of variables and settings that
define the physical makeup of this particular chiller. These include: number/airflow and type of fans, number/and size of
compressors, special features, characteristics, and control options. Temporary display of this screen is part of the normal
power up sequence.
An unhandled interrupt has occurred while running the application code. This event will normally cause a safe shutdown of
the entire chiller. Once the countdown timer reaches 0, the processor will reset, clear diagnostics, and attempt to restart the
application and allow a normal restart of chiller as appropriate. This condition might occur due to a severe electro-magnetic
transient such as a near lightening strike. Such events should be rare or isolated and if no damage results to the CH530
control system, the Chiller will experience a shutdown and restart. If this occurs more persistently it may be due to an
MP hardware problem. Try replacing the MP . If replacement of the MP proves ineffective, the problem may be a result of
extremely high radiated or conducted EMI. Contact Technical Service.If this screen occurs immediately after a software
download, attempt to reload both the configuration and the application. Failing this, contact Technical Service.
An Operating System error has occurred while running the application code. This event will normally cause a safe shutdown
of the entire chiller. Once the countdown timer reaches 0, the processor will reset, clear diagnostics, and attempt to restart
the application and allow a normal restart of chiller as appropriate.See Err 4.
A Watch Dog Timer Error has occurred while running the application code. This event will normally cause a safe shutdown of
the entire chiller. Once the countdown timer reaches 0, the processor will reset, clear diagnostics, and attempt to restart the
application allowing a normal restart of chiller as appropriate.
An unknown Error has occurred while running the application code. This event will normally cause a safe shutdown of the
entire chiller. Once the countdown timer reaches 0, the processor will reset, clear diagnostics, and attempt to restart the
application allowing a normal restart of chiller as appropriate
A touch was detected during boot indicating the user wanted to stay in boot mode. This mode can be used to recover from a
fatal software error in the application code. Cycle power on the MP to clear this error if it was unintentional.
A command was received from the Service Tool (Tech View) to stop the running application and run in the "converter mode".
In this mode the MP acts as a simple gateway and allows the TechView service computer to talk to all the LLIDS on the
IPC3 bus.
A command was received by the MP from the Tech View Service Tool and the MP is in the process of first erasing and then
writing the program code to its internal Flash (nonvolatile) Memory. Note that if the MP never had a prior application already
in memory, the error code "Err3"will be displayed instead of this, during the programming download process.
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