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Is the room stat turned up?
Have you got your own outside stop tap in the road/on the path?
Any drips from the PRV pipe outside?
The boiler hasnt been condemned, you gas supply pipe has?
How many radiatorsdo you have?
I'm happy with mine
As above the Allen key falls out
It's loud but they all are.
An intermittent fault could be anything.
Might be the gas supply is at fault and nothing to do with the boiler
You mentioned getting ripped of in your first post.
Get a fixed price manufacturer repair if you think you will be ripped off
Two or more boilers needed
Large hot water cylinders
A booster pump and storage tanks for cold water
You need to have the system designed...
If you have time to learn and take a low wage while getting experience then go for it.
If you need money straight away then look at other trades:.
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