Recent content by mattgibson

Thanks all, after calling Grunfos they sent the suppressor lead that they recommended the next day, I've just fitted it and turned the heating/hotwater on and off a few dozen times and all seems fine. It would usually permanently latch a relay within the first 10 times. So far, no latched...

I phoned Grunfos who instantly said they had heard of this issue before and is resolved by fitting a suppressor lead. The first of these pumps were supplied without leads but due to this sort of issue the lead was issued. They have put a lead in the post, great customer service (fingers crossed...

Its a Grundfos UPS 2 15-50/60, but no strange extra lead?!

This is a slightly strange one. The central heating pump of 25 years old finally died so I replaced it with a grundfos one. All appeared to work fine until I noticed that the old potterton boiler was coming on and the circulation pump was running despite not being set to come on. I...