Product Manual

17
EN
10. Troubleshooting
Errors Possible cause Rectification
Device is switched on, no dis-
play, screen not illuminated
Battery flat
Battery inserted incorrectly
Device or switch faulty
Replace battery
Insert battery correctly
Contact dealer and have
device repaired
Display jumps or screen
"frozen"
Program error Remove batteries, wait one
minute, reinsert batteries.
Irregular display screen
Battery power low Change the batteries
The device turns itself o imme-
diately after start-up
Battery flat Change the batteries