Recent content by ngate

Postscript: I'd recovered enough this morning to give the new pump one last try. It worked! I now think my problems were indeed down to air lodged somewhere in my pipework (must remember to fit a few more air valves next time I play this game). I'm still not confident that the new Grundfos...

@Rodders. I think you've called it right. I need a break from this! Thanks, everybody, for your input. MJ

I could play that game forever. Refit old Gfs- everything fine. Refit new Gfs - burner gives up after 10 min with rads still lukewarm.

Oh yes - there too

Oh yes - I've been down that bear trap too. Both(!) fully open.

Hi all, My trusty Grundfos UPS-15-50 Selectric was looking a bit sorry for itself because the ball valve on one of its pump fittings had been leaking. Since it was now 20 years old I thought it might be a good idea to fit a replacement before next winter sets in (probably around end July given...

Riello 502T5K burner, Johntheo5

Thanks for the heads-up re the coil, oilhead. I pulled it out and tested it for continuity - found 100 ohm resistance, so assume that it's still healthy. But also found that the nut holding the coil in place was loose, so tightened that. Anyway, while all this was going on I found time to pull...

The fan motor appears to start normally with just the normal "purging" noise. Could there be an intermittent fault in the control box?

My faithful Riello 502T5K, installed 20 year ago, suddenly started to lock out intermittently. It took me a while to realise that there was a pattern to the failures: Starting with an unlit lockout button the motor would run for a very short period (5 seconds or so) and then lockout. Pressing...