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7 TROUBLESHOOTING AND MAINTENANCE
Part No 1176122
31
Invacare® Solo
2
™ Portable Oxygen Concentrator
2848
Lcd - Err pending
message
The mailbox for receiving messages through the DSPBIOS operating system has a problem of receiving a message
between tasks. The operating system was told there is a message in the mailbox, but when it tried to acquire it, there
was a problem. The design of the code is not proper. This is only possible with a change to the source code, recompile,
and update to a new executable.
2849
Lcd - Err creating
mailbox
There was a problem trying to create a mailbox for task messaging within the DSPBIOS operation system. The design of
the code is not proper. This is only possible with a change to the source code, recompile, and update to a new
executable.
2850
Serial ee Handle Idf
Ee Write Err
Pending Message
The mailbox for receiving EEPROM write messages through the DSPBIOS operating system has a problem. The
operating system was told there is a message in the mailbox for an EEPROM write, but when it tried to acquire it, there
was a problem. The design of the code is not proper. This is only possible with a change to the source code, recompile,
and update to a new executable
2851
Serial ee err
creating mailbox
There was a problem trying to create a EEPROM mailbox for task EEPROM access within the DSPBIOS operation
system. The design of the code is not proper. This is only possible with a change to the source code, recompile, and
update to a new executable.
2852
Lcd - Mem alloc
err
Not applicable. IDF internal alarm. This code is reserved for Solo2 software development debugging.
2853
Err - Cal O2 open Applicable to Calibration Mode only!
The oxygen sensor was found to have an "open" condition. This condition can occur at all oxygen levels (room, 73%,
85%, 96%). The program logic looks for a voltage A/D level less than a specified value for each oxygen level.
2854
Err - Cal O2
cracked
Applicable to Calibration Mode only!
The oxygen sensor was found to have an "cracked" condition. This condition can occur at all oxygen levels (room, 73%,
85%, 96%). The program logic looks for a voltage A/D level greater than a specified value for each oxygen level.
2855
Err - Cal O2 O O
R73
Applicable to Calibration Mode only!
The expected output voltage of the oxygen sensor at 73% calibrated gas was either too low or too high. The program
logic looks for a voltage A/D level greater than a specified value for each the 73% gas.
2856
Err - Cal O2 at
85%
Applicable to Calibration Mode only!
The expected output voltage of the oxygen sensor at 85% calibrated gas was either too low or too high. The program
logic looks for a voltage A/D level greater than a specified value for each the 85% gas.
ERROR
CODE
TRUE MEANING POSSIBLE REASON/SOLUTION