Posting a message to the forum will remove the above advertisement
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Checkout our Plumbers Insurance area - heavily discounted Public Liability Insurance and Van Insurance specifically designed for plumbers.

Discuss Grant Vortex Combi No CH in the Oil and Solid Fuel Forum area at

  1. SJB060685

    SJB060685 Top Contributor!!

    Hi Guys. Still new to oil breakdowns. Got a Grant Vortex not giving CH. MI’s say (as far as I’ve got) the NRV could be stuck open, it says CH return will be hotter than flow if that’s the case which it is but I’m unsure exactly why that would happen. Can someone explain to me why that is?
Similar Threads - Grant Vortex Combi Forum Date
Grant vortex overheat reset Oil and Solid Fuel Forum Jan 20, 2019
Sizing Grant Vortex Oil Fired Cond Boiler Oil and Solid Fuel Forum Jan 14, 2019