Potterton Prima F30, pilot and main flame Ignite but?
My Potterton Prima F30 starts up from cold ok but then after say ten mins or so it reverts back to just the pilot light remaining my hot water and my radiators have not reached thermostat temperature, the flame looks a good colour too what could be sending the signal to the main flame gas valves to stop, any one any suggestions, it must be a thermosat musnt it?
Paul Smith, Warrington
November 2009
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