Hi. Don't know what Refleks is, but I do have a Lockgate Morso diesel fire, sounds the same. When I first got my boat had rough time trying to get it to light. Got some advice from an other owner.
Make sure you have fuel.
Clean filters.
Take out pot/cage and get rid of carbon in base, use hoover to get rid of scale.
Use rod from side to clean fuel hole.
Replace cage, pour in 50m of meths, light, close door.
Wait until cage glows red hot, (3-4 mins), then turn on Diesel tap to mark 3, should be small mark on numbers.
The flames in pot will die down, meths being burnt off, then yellow flames will start to come up turning to blue.
When fully alight, the effect will be like a blue glass saucer on top of pot/cage.
Don't forget to turn on pump for back boiler, (if you have one).
Hope this helps.
Forgot to say, push down lever on front.
Also use Rurboy cleaning brick every now and then to clean holes. If any probs call Lockgate on 01332798317.