hi my gas combi boiler is 8yrs ... and im struggling to get hot water... you can here the switch if you listern very carefully... but its just not firing up... plumber tester the switch an i think the pump.. or he said its not the pump i cant remember.. we have had him out twice now and even he is running out of ideas... he said next to change will be surcuit board but that wilbe pricey and what if it isnt that and i still have problems.... any ideas
You need a proper boiler guy, Honey...... not a plumber. I wonder if he's checked the operation of the diverter valve (points the flow at either heating or hot water depending on which is selected)
Then maybe change the circuit board. :o)))