Hey thanks guys,
I will print and present this to the engineer and hopefully he won't just say 'new shower head' but will be receptive to my problem.
I'll let you know what happens.
Thanks again for very helpful quick responses...
Hi, I have a vaillant boiler (TURBOmax VUW 242E, 282 E).
I had it installed about 5 years ago and it's been pucka.
In the last year or so tho it isn't firing up when I take a shower unless I put the mixer on full blast hot then as my skin comes off I gradually reduce it until just right but...