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Thank you for all your help. I checked the wires and all were still connected. There was water in the head, so it may have caused an issue? I have ordered a replacement as I need to replace the leaking valve before I can do anything else, as even I know water and electricity are not a good...

I understand they have this model that can be used as a system boiler or conventional, but ours is conventional.

Thank you. I only installed the MPE222 16 months ago and it has been working fine since, so suggests it may be that. That is easy enough to change as I didn't mess it up last time . The two port valve may be beyond my skills. Is there anyway to get the boiler on to heat the water while waiting...

Thank you. Would it be easy for a novice to change the two port valve or by the fact I am asking does it suggest I need a plumber/heating engineer? Unfortunately, I don't have a meter to test it, but if the Operating light is on but the boiler isn't firing up does that suggest this needs...

I hope someone can help please. We have a Viessman Vitodens 100W conventional boiler, 5 and a half years old. We have no hot water and the boiler is not firing up. There are no warning messages on the boiler (and it fires up and runs through the tests when power is switched on to it). I...

Thank you. Control panel removed, key pad and contacts cleaned with alcohol. Alarm buttons are now much better and seem to be working correctly.

I finally found time to look at this further. I removed the fuse, opened the panel and put the code in to switch off the alarm. I could unclip the panel below it but it still seems to be fastened in somehow (not just slotted in at the top). I didn't want to force it out - am I missing a fixing...

Thank you for replying again. I am relatively confident but also a novice. Based on reading other posts, and caution, I assume 1) switch off electric to alarm at the fuse box 2) open control box and enter code to switch off anti-tamper 3) unclip pcb 4) clean the back of keypad and also panel...

Thank you for replying. The keypad is built into the alarm control box rather than a separate standalone keypad. I did search online but it seemed to just bring up photos of either a new more rounded control box with the same 9448+ number or a separate standalone key pad. Does it mean replacing...

We have a Scantronic 9448+ original alarm that It has not been serviced at all in 15+ years, as it has worked fine up to now. The keypad has started to be difficult on certain numbers, so I changed the code. However, it is still not always responding to the code (it beeps when numbers are...

I meant 2 port valve.

Reporting back as I know it is annoying when someone asks for help then doesn't say what happened. We have had hot water and also heating if we also switched on the hot water, so could make do. The home emergency engineer came out and identified a two port valve was at fault (not the one I had...

No, sorry, I uploaded the wrong photo - the middle valve is small and bronze (not in the picture). I didn't touch any of those with plastic caps as they didn't look like they should be removed.

Thank you. It was your suggestion to take photos that prompted me to take a closer look at all the pipework above the hot water cylinder. While at eye level to take the photo I then spotted the top of the other big valve could unscrew to let air out.

This was the metal balloon with max 6 bar indicated on the label.

Feeder tank level has dropped slightly which suggests it has taken water in. No running water into the tank though, so it may be the ball valve needs replacing (engineer mentioned it may need doing at some point soon, but must have somehow got water running into it to top up the system).

I seem to have solved the running water sound. I didn't realise that the top right could also be turned to release air (I had just turned the small one in the middle).

I have been in the loft and the water tank has water in (above the out/lowest pipe, but way below the inlet attached to the ball valve - the only other pipe attached is the overflow). Oddly no water comes out of the ball valve/inlet when the ball valve is down, but there is plenty of water in...

Thank you - that has got all radiators now working, there was no air coming out of any radiators, but still the running water sound in the airing cupboard.

We have a system/conventional boiler (Viessmann Vitedens 100W) with a feeder tank in the loft. A leaking radiator valve upstairs was changed, which involved draining quite a bit of water from the system. After fitting the valve, the engineer refilled the system and mentioned we may need to...