Hi, alot of these hoods are rated to specific hobs underneath.I would guess that you have free standing cooker underneath.The output of the cooker is above the limit of the hood.Some manufacturers have high temperature motors that can be fitted.If you have a normal hob under it,I would check that the vent is totally clear.If the vent is blocked then the hot air cannot get out.The motor then cuts out on its internal toc (stat). All the best.
FOXY
November 2008
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