My mynute 20e works fine, heats rads turns on and off as the stat dictates but then out of the blue the red light comes on and just the fan stays on constant, if I reset it immediately works perfect again for another hour or so then the same thing again

jamie, February 2015

Manual here:

http://cdn0.vokera.co.uk/wp-content/uploads/2011/09/mynute-12-16-20e-installation-and-servicing-manual-copy.pdf

INfo on ignition sequences here:

http://www.gasboilerforums.com/manuals/vokera/Boiler%20Ignition%20and%20sequence%20of%20operation.pdf

For more expert advice try a dedicated plumbing forum, for instance:

http://www.ukplumbersforums.co.uk/central-heating-forum/

Me/here, February 2015