The power
switch flashes
twice.
Defective photocell (fire
protection).
Empty fuel tank
The fuel is frozen or too
thick or too old.
Fuel line damaged or loose.
Contact the manufacturer's
service - the photocell is to
be checked and possibly
replaced.
Add fuel.
Defrost the fuel and replace
it with fresh fuel.
Check the fuel and air lines,
including their connections -
if there are leaks, remove or
replace the components.