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Just got home, looked under boiler and see what you mean about flow and return valves now! I found the flow valve shut in the off position? Don't know how this has occurred, also slots been graunched with wrong sized screwdriver?! Wonder if boiler engineer did it when serviced last time (in...

I appreciate what you're saying, thanks, but the filling loop is permanently fitted to this boiler and if both valves are in line with the pipework, it will keep filling the system? I have filled the system this way for years and bled rads ok. Boiler worked fine, this is first time, except for...

ALL TRV's are ok, all set to max, diverter valve is operating ok, (even proved manually, same scenario!), flow and return valves are closed after filling system again to 1.5bar. I'm at a loss what it is? Every rads shows no sign of air, water coming clear out of all rads! Totally blowing my...

Bunnyman, When diverter valve replaced, checked operation of motor, valve etc and replaced motor spindle over ball and fitted correctly. DHW works fine, it's only when it switches over to heating this occurs. I've also manually put valve into heating position and same occurs as when motor...

Bunnyman, I'm sorry, you've lost me on your reply? Please explain, as my basis is in Electrical and as we're cold and short of cash, I have to sort this out myself. Thanks.

3 TRV's were set to mid position upstairs, 1 TRV (in kitchen) shut off, ALL TRV's are now set to maximum and turned up and down a few times to operate valve stems in case they were stuck! I have noticed pressure dropped twice over two days to just above 0, refilled and bled rads again. Do...

Hi, i'm new to this forum, so please excuse me if I don't give all or correct info needed straight away. I tried to fire boiler lately, after loading system to over 1mb and bleeding rads, only boiler fires up, goes into ch mode, reaches temperature of 82 degrees very quickly and shuts down then...