Denso BTH-300BW User Manual page 163

No user programs found
Problem
When the BHT is turned on, no user programs are found.
Solution
You can run the code scanning demo without user programs.
Pressing "1:Yes" runs the code scanning demo. To start the demo,
press the trigger switch. Selecting "2:No" turns the power off.
Resume data lost
Problem
Although the resume function had been set to ON, no resume data
has been retained since the BHT was not normally turned off and then
left without a battery cartridge loaded or with a discharged battery
cartridge loaded.
The BHT displays this error message for three seconds and
automatically runs the execution program from the point of
start-up.
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