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Hi all Thanks for your help again. Problem seems to be fixed and both CH and HW are running. I cranked up the motor to speed 3 and opened one of the valves and it sparked into life. Motor now running on speed 2 and all is well. Now to find this air lock.....

No, the pump doesn't run when the hot water is being called.

Hi, thank you for your responses. The pump is NOT running. It's a Grundfos selectric. I'll try bleeding it and will bleed the rads, so hopefully that will do it. Any tips on restarting a Grundfos Selctric would be much appreciated. There is definitely an air block lurking somewhere in...

Hi I have hot water, and the boiler fires up to replace it when I use the hot water, but I have no central heating. I have put the boiler to max, the heating thermostat to max, and CH and HW to ON on the control panel - but still only get HW and no CH. I recently replaced the...

Excellent! Thank you, that is exactly what I need. Thanks again, Tom

Thanks Kev. How exactly do I bleed the pump? Through the silver screw? I thought I had bled it but maybe I haven't... Tom

Hi I've just fitted a new Honeywell mid-position valve to my heating system. The new valve came already attached to the three-way pipe fittings so I replaced the whole apparatus - which meant I had to drain my hot water cylinder. In doing this, the expansion tank emptied so I bled every...