David Dawes asked ... How to recoil the starter spring - Champion R484TR?    |    peter high asked ... How can I set time on my Neff oven?    |    Michael asked ... Mountfield empress drive belt?    |    John Barton asked ... How do i clear the TAM?    |    John asked ... How can I mend my binatone veva 1210 handset?    |    Click here to ask your question

Vaillant Turbomax 824 overheats very quickly in heating mode?

My Vaillant Turbomax 824e overheats in heating mode all of a sudden after 12 years working fine... I replaced pump as advised then fitted new bypass after talking to Vaillant helpline... Hot water works fine... Please help!!!
Possit14, February 2012
Assuming you have a Turbomax + (rather than the old VUW). It sounds like the diverter valve isn't opening to the CH position

Carefree, March 2012
link Click here to see other fixes for Vaillant.