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what should the pressure be on the Schrader valve?

I gave it just a short press and still pressure on the air side.

I have done as you said and there no drop on the boiler, what items can i check when you refer to the system?

I have isolated the boiler for 12 hours as you have suggested and pressurized before shutting the valves. There is no drop in pressure on the boiler. Assuming there is a leak in the heating coil, is this something that needs to repaired or can it be topped up daily? Are there any other checks...

The problem is you don't get good quality tools that are cheap, you only get poor quality tools that are cheap. I suggest you buy 1 good quality driver each month and to be fair you maybe need 4 or 5 for DIY.

thanks

Thanks I will give this a try at the weekend and report back, is there a special key or tool to shut the valves with?

I depressed the value momentarily, just a quick release.

Hi I have a vokera mynute 28 combi boiler in the house I recently bought, The system is as follows, there a single cold water tank in the loft, a pressure vessel in the bathroom with a 3 port valve. The controller is a diadem 425. I have been running the DHW since moving in with no issues, I...