Hi everyone
I've got a baxi 105e the heating is working fine but when I turn the hot water on it's not heating up unless it's dribbling out then it heats fully knocks off the flame then reheats,it will work for a week then go again,I've changed the diapragm but no luck,would it be the thermistor? Divert or valve? Thanks

Jj5966, January 2015

its up to you, the part goes back in reverse of taking it out. you will just need to turn of the isolating valves under the boiler and drain the boiler of both central heating water and buy just turning on a hot water tap to relive water pressure from the boiler. then your good to go. no gas work involved so any diyer is allowed to do it.

h21, February 2015

Can that be done by a confident diyer?i can see the manual on how to do it Or should i get someone in? Thanks

Jj5966, January 2015

blocked domestic hot water heat exchanger (dhw).
Either replace it or take it of and jet wash or hose the holes to get the debris out.

h21, January 2015