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Sound Kev, It will be for htg & dhw. My mate works for a national company, and said he can get good discount on Vaillant. Lets hope he works his magic. PS they're not in their teens yet, so im heading for the 831, how much would i be looking at for someone to rip out an existing combi, and...

After a Vaillant due to the comments and reviews i have seen online. I own a 3 bed semi-detatched house, with the wife and 3 kids. Usual kit installed (1 x bath, 1 x shower, bathroom sink, kitchen sink, washing machine). I was thinking along the lines of a 30kw boiler?? Just wondering what...

Please feel free to enter make/model with controller, and advised install i.e magnaclean, and split cost (materials only, & materials and fitting). Currently have Bosch Worcester combi fitted, so presume straight swap

Is there anyone out there who can help?

Ok, ive run the test (from cold). Ran the kitchen tap on full for a couple of minutes which controlled fine around 50 deg (without boiler going off), then reduced flow from tap by approximately 50%, and boiler controlled very well at around 60 deg (on lower flame) for over 5 minutes (without...

sorry namsag, not sure if we've crossed lines or not here, but i presume your aware that its a combi boiler I've got. Not sure what you mean in stating calorifier???

If the sensor were faulty, and the boiler was staying on high flame (and not reducing output), would this not create an increase in flow temperature before the boiler locks out? :roll:

Bosch Worcester 280RSF, In hot water mode temperature at hot tap is a steady 50 deg C. IT DOES NOT INCREASE IN TEMPERATURE. It runs fine for approx 5-10mins (at around 12 l/m). Boiler then locks out, and needs resetting. :roll: :roll: :roll: :cry: THANKS IN ADVANCE

do you think i should clean exchanger again? or buy new one? Also wondering about installing de-scaler/conditioner on cold water into boiler - is this advised? how much would you say for new fan, heat/ex. and maybe even something to soften/de-scale water? (its a Bosch Worcester 280rsf)...

Going back sometime last year, i posted on here about hot water problem (hot then cold). After some sound advice, i took out the sec. heat exchanger, cleaned and replaced - worked as good as new. In the last month or two, the boiler fan began to rub and make a pinging noise, and deeper clanging...

I'm looking for a programmer to control my bosch worcester combi boiler. At the minute the boiler is located under the stairs (with a Danfos MP75 programmer (aged). I am looking to bring the programmer out to a more practical location, so i am looking for a decent reliable programmer that is...

What a result........... :D :D :D :D Removed phe which didnt look scaled up, just black. Cleaned phe in pan of hot water with cleaner twice, backflushed with shower hose, re-installed and hey-presto constant hot water! :shock: Like to thank everyone at the forum for their help, and...

8) Owe you a beer mate, thanks a lot :D Just hope i get a result tomorrow (remove phe and see if thats the cause)

i can only see one manual megawatt :oops: :? :roll:

Gasguru where in the manual did you get that from mate? The one i'm looking at is only 4 pages?? :roll: (clicked on the link that megawatt posted) :?

trv pin stuck in? :roll:

I'd go for a temperature around 60deg. Starting from the most favored couple of rads (closest to pump), 1/2 a turn open on lock shields. then gradually increase the settings the further you get away from the pump, with the least favored rads fully open. once this exercise is done grab yourself a...

Right, i think I've narrowed it down to one of the following two item numbers; 1) 87161429010 (says 24kw) @ around £50 OR 2) 87161429020 (says 280 alfa) @ around £115 Sorry for all the confusion, but its a new house I've moved into, and i haven't got a manual for the boiler. If...

I have a Bosch Worcester 280rsf at home, heating works fine, but problems with hot water (runs hot-then cold). Have been told that it is most probably the hws heat excahnger (blockage/restriction on primary side). If this is the case, what replacement part number do i need-can't seem to find...

I could do with some help plz guys.....Worcester 280RSF, when i run a hot water tap anywhere in house, it runs fine for about a minute, then goes cold, and then back hot again-very frustrating when in shower!! I've been advised that it COULD be sludge in the sec. heat exchanger?? If this...