Thats what i'm worried about. There's no leaks from the rads anywhere. I've no way of checking elsewhere though. I've refilled and purged so will have to keep an eye on the bar.
Make sure you say you want written quote and receipt/garuantee. Most builders will want cash in hand so be careful with that as you will have no proof of payment.
I woke up this morning to find the heating hadn't come on. I then noticed the downstairs mains plugs circuit had flipped. I flipped it back on and went to the boiler which was saying f22 (dry fire) and 0.4 bar.
I cannot see any leeks anywhere so cannot see how it could be 0.4 bar.
Also I...