Invacare Solo2 TPO100B Internal Repair Manual page 30

7 TROUBLESHOOTING AND MAINTENANCE
ERROR TRUE MEANING
CODE
2838 Alarm - ric Too
few null configs
2839 Alarm - ric Null
destinations
2840 Alarm - ric Event
discarded
2841 Alarm - ric
Allocating another
memory pool
2842 Alarm - ric Idf
Unknown error
2843 Alarm - power
button held force
unit shutdown
2844 Alarm - pll is
running in limp
mode
2845 Alarm - sci Rx
buffer full
2846 Alarm - serial ee to
long to read
2847 Lcd - Err posting
message
Invacare® Solo ™ Portable Oxygen Concentrator
2
POSSIBLE REASON/SOLUTION
Not applicable. IDF internal alarm. This code is reserved for Solo2 software development debugging.
IDF internal alarm. The function pointer list that contains next function information is invalid. An access to get the
destination state from the event queue turned up pointing to nothing. An destination pointer either got lost (event
destination pointer is invalid) or the event destination is invalid.
Not applicable. IDF internal alarm. This code is reserved for Solo2 software development debugging.
IDF internal alarm. There is not enough memory for the IDF, another memory pool needs to be allocated. The design
of the code did not adequately allocate enough memory space for the IDF. A larger memory space needs to be
allocated. This is only possible with a change to the source code, recompile, and update to a new executable.
IDF internal alarm. An alarm occurred while executing the IDF code that has no assigned alarm code. This alarm should
not be possible, but if it does occur, it means there is a problem with the code design of the IDF.
Force a processor reset if the On/Off button is held longer than 5 seconds. The actual error code should not show up
since after the alarm is decoded, a processor reset will occur wiping out the alarm code.
The normal processor clock frequency is not working. A very slow (limp) frequency is being used so that the processor
can at least notify the user of the problem. Check the external crystal oscillator for the microcontroller for proper
operation.
During a serial transfer, the amount of RAM allocated to store the SNAP packet has been exceeded. The serial
communication might be invalid. Check the SNAP statistics on the appropriate versioned GUI for serial transfer errors.
The design of the code did not adequately allocate enough RAM for the SNAP serial transfer. This is only possible with
a change to the source code, recompile, and update to a new executable.
Not applicable. IDF internal alarm. This code is reserved for Solo2 software development debugging.
The mailbox for sending messages through the DSPBIOS operatiIn order to accommodate asynchronous
communication between processes, a message system has been implemented in the operating system. If the mailbox
that holds the messages is full, a posting error will occur. ng system has a problem of sending a message between tasks.
The design of the code did not adequately allocate enough message space for the mailbox. This is only possible with a
change to the source code, recompile, and update to a new executable.
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Part No 1176122