Recent content by Prof.plumb

Use a good descaler safe for use in kettles and pour it in with boiling water wait five mins it will all bubble loosen off and clean up a treat.

Seriously who cares? Who wants a old useless part laying around. They send the parts back so that the company knows the engineers arn't on the rob. If they fit a part the old one is sent back to prove its been changed not put in the engineers garage kepeish!?

Has anyone changed the ball valve?

It's not 22mm its 3 quarter. When you by a 15mm trv it will be to half inch. Simply unscrew the tails from the rads which you said were 22 mm and ptfe up your half inch tails that come with trv set and screw that in instead and bobs your uncle!

This is the gloworm 30 cxi leak. Burner seals have been superceeded from rubber to graphite. The flue adptor that connects onto the heat ex has been changed as washer at back leaks and the condense trap has been superceeded as these leak.

Size depends on size of system, how many rads are there? You do not require additional prv or filling loop.

Poachins

Nonsense. This is a Vaillant, 242 or 282. Most parts are available for this boiler. Just need a competant heating engineer to look at it for you. If hot water is working fine it is probably an issue with diverter valve not moving into heating position.

You are losing pressure due to the leak. If it is the white draincock on righthandside try tightening it yourself, these are usually only hand tight. If you can not tighten it call out a gas safe engineer and have the relevant part replaced.

go to your wiring centre/ double patress where heating wires are situated. turn clock to off on h/w and heating and check whether you are gettinqg 24o volts on orange wires.

washer on your tap is the fault.

If you work for a small firm it is difficult to get into fault finding. I know that british gas are changing their insurance to breakdown only soon and will be looking to take on servicing/breakdown engineers. If you got on servicing you could build up your experience and go on upgrade course to...

Or dhw thermistor.

You dont bleed an expansion vessel. doesn't matter.

have you got a combi boiler