Hi can u help when my boiler I have heating and hot water but water very hot I've noticed . When heating been on for a bit will cut out both lights will come on water coming from pipe outside .have to top up least once a day and reset had Scottish gas out for service still doing it .when it's ok it works fine both water and heating till lock out

Christine, May 2014

change pressure relief valve,ask service provider to do it

ltd, May 2014