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Didn't have time to go upstairs before the boiler banged again and cut out. It's almost as if someone turned the gas down and it was trying to ignite what was there. I could see the boiler casing move slightly as well! The gas valve was replaced about a year ago if that helps.

Hi All, I won't bother telling you the whole story but get straight to the point. My boiler makes a series of loud bangs which I think are coming from the combustion chamber and after a few of these bangs cuts out. Strange thing is that the boiler was on for about an hour then started...

I have to wait until Friday when they're coming back!

Rad in the bathroom doesn't have a TRV fitted (mind you I installed the TRV's on most of the rads a few years back).

Thanks for the reply. I opened all the TRV's in case this was causing the issue. The rads which I can't bleed do come on though. The boiler was set to its lowest temp setting. Could it be that I had the immersion on and the hot water somehow is ending back up in the F & E tank in the loft?

Had the central heating on last night for 2 hours before I heard the boiler knocking and it cut out. One thing I noticed this morning when I left for work is that the overflow pipe sticking out from my loft had obviously been dripping as the roof slates were wet. I have the electric immersion...

3 rads downstairs were on but I opened up the 2 rads upstairs and fired the boiler up and that's when I heard the loud knocking from the boiler and it tripped.

Tony, Re-reading your post again, do you mean leave the bleed valve open on one rad and not shutting off the TRV? Cheers Daz

Cheers Tony. Just tried opening up the two rads which I closed and pressed the trip on the boiler. It fired up for a minute or so and I heard loud knocking sounds from the boiler and it tripped again. I've turned it off for now. Just so I understand you correctly are you saying to close...

Cheers Dan. Any recommendations on clearing the air out. I've tried opening the rad bleed valves but all I get is water! Not sure if this is relevant but I've shut off most of the rads thermostatic valves as we don't want to heat those rooms but if you think I should open them all up then let...

Hi All, We had a gas engineer come to fit two new zone valves. It took him ages to try and get the air out of the system. The issue now is the boiler stat trips every few minutes so something isn't right. It's a Potterton Prima 60F. Could it be air still trapped as I heard one of the...

Hi All, I'm repainting my kitchen walls. I started with the wall and ceiling edges cutting in with a brush. I then switched to a roller for the main bulk. The problem is the edge finish looks different to that of the roller finish. I've only put one coat so far and it'll need at least two...

That's probably true Tony but we are where we are with this I'm afraid. All indications would point to a faulty zone valve or microswitch. Would you agree? Cheers Daz

Not sure you can remove the heads on these Tower valves unfortunately.

Hi All, Having had no end of trouble with my central heating I made a concious effort to see what is causing the CH not going on (HW is fine). My HW zone valve makes a click when fully opened whereas the CH not only doesn't seem to move as far but there is no click. The valves I have...

I've put the old programmer back and the room stat now has power. Don't think the new one was wired correctly by my pal. Now I have the pump running when selected HW and no pump running when I select CH !

Just discovered that since changing the programmer the room stat has no power!

Had a busy day and only just took a look at the zone valves. The HW valve indicator arm moves a lot further then the CH one. I also noticed the CH valve when opening or closing moved the motor at it's stop position as if it were a little loose. I'm thinking that one of the microswitches is at...

I'll have a look tomorrow morning Tony and let you know. Do you think it may be the pump or perhaps the valve microswitch?

Think we've got it down to something to do with the switched live but for the life of me I don't know why the boiler now fires up but won't turn off!