Central Heating Problems and Solutions

[Dan B]

Thanks. There is a very small nut on the reverse, which you can't even see properly because there's so little access (camera couldn't manage auto-focus on it either at night) and it's painted over. God knows what size spanner is supposed to fit as it feels like a completely random shape - I'll try to get a photo tomorrow and figure it out from that.

If it's a normal bleed valve it'll be a square cross-section, not a normal hexagonal nut of any size.

 

[CopperBrompton]

The bleed valves I'm used to are female - this one is male

 

[slowmotion]

Trike, the bleed valves on the back of my radiators have a standard male spigot. Use a standard female bleed valve key to bleed them. The key is about 5.3 mm across the flats. BTW, think twice about which direction unscrews the backwards-facing valve...

Bon Chance, Ami!

 

[CopperBrompton]

Thanks, will give that a go over the weekend when I've obtained said device :-)

 

[Globalti]

When you've got it open, hold a match to the vent. If it ignites it's hydrogen and your heating system is rusting internally so you need to add some inhibitor.

 

[Hawkeye]

hot water but no heating- isolate the appliance, take the cover off, chin the diverter valve with the fat end of a good sized screwdriver, replace cover, switch boiler back on, enjoy warm rads.

If the screwdriver treatment doesn't work any more, it's usually pretty simple to replace the diverter valve motor, 2 screws and a 2-wire connection.

 

[ColinJ]

When you've got it open, hold a match to the vent. If it ignites it's hydrogen and your heating system is rusting internally so you need to add some inhibitor.

Then rebuild your house and grow some new eyebrows...?