Product Information: The control knob sits on one of the spindles located on the front of the appliance and allows you to manually control certain aspects of the appliances functionality. Some boilers allow you to change temperature and some even enable you to change the current function. This means the user can have the boiler generate hot water without the central heating being on and vice versa. What needs to be done : first take the front cover off, there is only ONE screw that you need to loosen for this : it is underneath the CV heater, right at the front. Once that is loose you can take the whole front metal sheet off.

Not what you're looking for? Try our unique Spares Finder tool or you can view all Vaillant Boiler Spares products. Pressing the metal body in helps ease it off by hand, if not strong use screwdriver or butter knife (if you have no screwdriver) So are any of you capable of posting a picture of what the knob looks like when it is not broken ? I assume that my knobs are broken but I do not really see where it broke off from... Very strange. I switched off the heating at the programme panel (in the kitchen) as not needed heating on recently (last 2-3 months).

multiMATIC VRC 700

I was wondering if now the boiler has been 'cool' for a long period, if the knobs were a bit snug and that contraction in some way has strained them? The VAILLANT 0020074963 KNOBS, CPL. GREY (PK3) is a genuine, brand new Vaillant Boiler Spares product, covered by a Vaillant Boiler Spares manufacturer's guarantee.

I know this is an old thread (well, nearly 4 months, but seems to be the exact same problem I have just found, so didn't duplicate). The knob broke on me, ecotec 824. It is easy to fix, even if you are not handy or elderly or a lady who does not do DIY, most ecotec models conform to below instructions: However, the reason why I even started to turn the CH dial on/off in the first place was because I could no longer trust my VRT 360f Room Thermostat after returning home after a week-end away to find that the CH was full on and the whole house was 35 degrees!Just spent 3 cold days waiting for the replacements to arrive (boiler CH dial broke in off mode) and followed carefully your guidelines. Out of warranty and there was no way I was going to spend out on a clear case of it being a manufacturing fault, on what seems to be ATM a great boiler. Had I not been able to mend it, I would have insisted that Vaillant fix it (4 year old boiler) .... I mean after spending out thousands to fit an all singing and dancing bit of hi tec kit only for the control knob to fall off! I bought one that did not have inner central rings like my broken one, I bought it yesterday morning However as I rotated it to fit into it's slot shape (has a slit on a side, need to align correctly) IT FITTED IN