I do trust my plumber but he asked me to talk to the manufacturer to make sure it is outside of warranty before he looked at it.
I posted the question to get an idea of what I should be expecting to get this fixed.
I wonder if anyone could help. I have a boilermate 2000 in a property I rent out, it is just over two years old. The tenants tell me the heating has stopped working. It worked 2 weeks ago when I was last in the house. The hot water is working fine. It appears that the radiators do not heat...