vaillant turbomax 242 HW probs

[konabenno3]

Hi All,
New to this forum so please bear with me!
Have the above boiler fiitted, approx 10 yrs old. suddenly the hot water flow rate has reduced by around 50 - 60% than previously.
Has been mentioned to me that its probably the main heat exchanger scaled up, but i would have thought the flowrate would have reduced over a period of time??
I'm reasonbly competent, is it a job I should tackle myself?
Thanks in advance.

 

[stevetheplumber]

Hi All,
New to this forum so please bear with me!
Have the above boiler fiitted, approx 10 yrs old. suddenly the hot water flow rate has reduced by around 50 - 60% than previously.
Has been mentioned to me that its probably the main heat exchanger scaled up, but i would have thought the flowrate would have reduced over a period of time??
I'm reasonbly competent, is it a job I should tackle myself?
Thanks in advance.

main heat exchanger will make no difference to flow of hot you need to look at the secondary heat exchanger

 

[oldplumber]

If it isnt your secondary heat exchanger and youve got the boiler in bits and it starts to leak as the o rings fail on rebuilding it and the electrics get wet and fry, you will soon have a very large bill when u eventually call in the experts. Why not call them in now and save lots of potential hassle.

I dont bother servicing my vehicles now adays as everything is pcb this and that, why do people think boilers are any different.

Still its a free country, so thats what generates loads of my business😀