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But thanks for your update too

Sadly I haven't yet. I have spoken with Zinnser technical who suggested peel stop but I'm not hopeful as the chap I spoke to didn't fill me with confidence. I think he was reading from their own website. I was hoping for a professional opinion on here. I'll update on here if I go for it

The preheat is there to heat the secondary heat exchanger to allow instant hot water. If you have this feature off, you will have to wait a short time for the boiler to start heating water and a few additional litres of water. Most people don't bother with the preheat as the boiler fires...

Hi all, My own home has a paint blistering issue. My hallway is a sand/cement platsered wall which was already coated before we moved in. It's a 1950s house. We naturally put our stamp on the place and put a coat of standard dulux water based paint on the wall after rubbing down and thoroughly...

Just a quick one to add my 10 pence worth. The anti-cycle is a setting within the boiler to stop the boiler coming on and off rapidly if the temperature demands rapidly change. The anti-cycle would make the boiler stay off for a predetermined period after it reaches temperature. This could be...

Thanks for this dcdec. How do I thank you? I haven't posted a question until today? Haha

Hi people. I have an older house which has been decorated many times before, and I have no idea how its been prepped prior to each coat of paint. I have applied new paint over the old paint (rubbed down surfaces and cleaned etc) but I have a problem! As this paint begins to dry, I end up...

If I remember rightly, those boilers have a magnetic flow detector on top of the diverter valve. It's a little white cap and has an little green light on it. When there is flow though it it has a small led. I'm sure I've had this issue with this exact boiler in the past. It can be a bit of...

When this occurs, is it at roughy the same time it is programmed to go off?

Please ignore last...realised you gave the model.

From what you're describing, it sounds like water hammer. When the other chap did the ball valve in the loft, he would have isolated the mains and possibly drained. This could have upset the system in a subtle way. Sometimes the stopcock being on slightly more than previously can do this...

Hi, I live in a 1950s semi. I live next door to a house which is rented out room by room to all different people. They are all reasonable but they do all make noise at regular times of day and night. It's like having 4 living rooms joining onto our party wall. None of them are out of order...

I would be checking the plate heat heat exchanger for scale/sludge. I haven't looked into the codes you mention but the plate heat exchanger is usually the first thing to check, particularly with the symptoms you mention.

It's possible but there's also air to consider. If you had a pocket of air somewhere in the Pipework this would reduce the flow like you mention. Before you go looking deeply into this, I would let all the outlets (cold tank fed) run for about 5 mins. If you get some coughing and...

This would hopefully prevent air being drawn back if someone opened a basin tap as you suggest. The problem lies with air being drawn in from the configuration prior to this. The design of the hot water cylinder is that air and micro bubbles would find their way up the vent pipe and some...

The reason the magnet sticks is because the sludge is actually iron oxide also known as magnetite. Your magnet won't stick to the copper but it will stick to the iron oxide. A big deposit would show with a magnet. The deposits in the blockage could also be non magnetic.could be scale...

I would always suggest having both systems on an equal pressure. Having your cold supply via gravity and your hot water on mains isn't ideal. I would do as you suggest and you will benefit from more than just a good shower. If your mains pressure is good, you'll have a better flow...

Hi, I would strongly suggest replacing the airjec. The only way you'll shift that blocked cold feed is to mechanically break it up with something like a coat hanger. This would move the blockage elsewhere, which would be bad news for your system. Chemically cleaning won't shift it if it's...

The reason I say this is, the light on your room stat would stay on regardless of what the boiler was doing if any of the faults on the boiler occurred. Are you ok with the use of a multimeter? Might be worth checking the switched live to your boiler. If this drops out at the point of the...

The fact your light goes out on the room stat makes me think it's controls related. Do you have any zone valves? Also what programmer?