My Baxi Bermuda 57/3M back boiler doesn't heat the radiators. The boiler flame only lights up for approx 1 minute then cuts out for 15+ minutes before relighting. the pump continues to pump the lukewarm water round the rads.The pump is controlled by a room thermostat. The orange boiler control is set to max with no effect. it can be induced to ignite by turning the orange knob to min then back to max. But this still only lasts a minute. The pilot works fine & remains alight at all times.

Emilio, December 2010

Sounds like the system is empty/partially empty, check the F&E cistern (probably in the loft), the ball valve may be stuck.

Carefree, December 2010