: Batter is extremely low, cannot operate the valve in this
condition! User should replace the batteries as soon as
possible.
Remark: During replacing the batteries, the program data
will be saved for approx. 2 minutes. If replacing the batteries
takes longer time, all program data will be lost.
Troubleshooting
Fault
No display
appears
Possible Cause
Battery inserted
incorrectly
Flat battery
Temperature on
the display is
higher than 60 °C
Solution
Check polarity markings
match
Insert new battery
Display will appear after
temperature has dropped
GB/IE 67