182 CG-SVX17D-EN
Diagnostics
Err2: RAM Pattern 2 Failure
There were RAM errors detected in RAM Test Pattern #2.
//Recycle power, if the error persists, replace MP.
Err2: RAM Addr Test #1 Failure
There were RAM errors detected in RAM Address Test #1.
// Recycle power, if error persists, replace MP.
Err2: RAM Addr Test #2 Failure
There were RAM errors detected in RAM Address Test #2.
//Recycle power, if the error persists, replace MP.
No Application Present
Please Load Application...
No Main Processor Application is present – There are no RAM Test Errors.
// Connect a TechView Service Tool to the MP’s serial port, provide chiller model number (configuration
information) and download the configuration if prompted by TechView. Then proceed to download the
most recent application or specific version as recommended by Technical Service.
MP: Invalid Configuration MP has an invalid configuration based on the current software installed
MP Application Memory CRC Error
App software inside the MP failed its own checksum test. Possible causes: application software in the
MP is not complete – software download to the MP was not completed successfully - or MP hardware
problem. Note: User should attempt to reprogram the MP if this diagnostic occurs.
App Present. Running Selftest.…
Selftest Passed
An application has been detected in the Main Processor’s nonvolatile memory and the boot code is
proceeding to run a check on its entirety. 8 seconds later, the boot code had completed and passed the
(CRC) test.
// Temporary display of this screen is part of the normal power up sequence.
App Present. Running Selftest…
Err3: CRC Failure
An application has been detected in Main Processor’s nonvolatile memory and the boot code is
proceeding to run a check on its entirety. A few seconds later, the boot code had completed but failed
the (CRC) test.
//Connect a TechView Service Tool to the MP’s serial port, provide chiller model number (configuration
information) and download the configuration if prompted by TechView. Then proceed to download the
most recent application or specific version as recommended by Technical Service. Note that this error
display may also occur during the programming process, if the MP never had a valid application any
time prior to the download. If the problem persists, replace the MP.
A Valid Configuration is Present
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.
Err4: UnHandled Interrupt
Restart Timer:
[3 sec countdown timer]
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 can be caused by a
near lightening strike. Such events should be rare or isolated and if no damage results to the CH.530
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.
Err5: Operating System Error
Restart Timer:
[3 sec countdown timer]
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 above
Err6: Watch Dog Timer Error
Restart Timer:
[3 sec countdown timer]
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.
Err7: Unknown Error
Restart Timer:
[3 sec countdown timer]
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
Err8: Held in Boot by User Key Press
[3 sec countdown timer]
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.
Converter Mode
A command was received from the Service Tool (TechView) 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.
Programming Mode
A command was received by the MP from the TechView 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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