Our Truma fire has been working fine for years now and without warning when on 2000w it stopped , tried it again after letting it cool down and tried 1 kw then 500 w and it still would not work. The fans do work and the 13 amp fuse is ok plus the mcb. Having looked down the back of the fire where the controls for the settings end up in a plastick box i did not see any trip swithes etc. Left it for 24 hrs and tried again and it came on but only lasted for 10 minuets then cold again. Can any one tell me the next step?, many thanks if you can.