It's in the User Manual somewhere, I think, as well as in the Knowledgebase as AnswerID# 42387:
On power-up, the PanelView terminal executes a series of self tests, below is a listing of the test number and the test functions
Test Number: Indicates:
1 STATIC Ram Test
2 Terminal Searching for a file to download
10 Erase boot flash area.
11 Copy boot code
12 Boot code copy successful
13 Boot code copy failed. check for error after boot code is copied to the onboard flash EPROM
20 Erase firmware from flash EPROM
21 Copy firmware to firmware flash memory
22 Firmware copy successful
23 Firmware copy failed
24 Performed CRC base firmware check
25 Firmware not compatible with boot code
26 Firmware not compatible with hardware
30 Watchdog test
31 Stuck key test
32 Real time clock test
33 LCD RAM failed
34 Performed CRC extended firmware check
NOTE: Not all of these test numbers are seen during a power up cycle
If a test fails, the terminal displays:
ERROR! FEHLER! ERREUR! ERRORE!
and the test number where the error occurred