Ravenheat RSF Central Heating Pressure

[stuart_adair]

I've got a really annoying problem with my combi. Every 3/4 days I have to repressurise the central heating system as the pressure falls from 1.5bar to 1bar but I cant find a leak anywhere.

With the amount of water going in it should be really obvious but I've been over every inch of pipework and cant find a leak.

Are there any other possible causes

 

[wiggikins]

Have a look at where the pressure relief valve discharges to outside,if it,s
got adrip you,ve probably got a faulty prv.


Keith.

 

[stuart_adair]

Thanks Keith, yes I've tried that and the pipe is dry

 

[wiggikins]

Have you had the floorboards up then?


Keith.

 

[stuart_adair]

Yep - I've checked bloody everywhere

 

[gas4you]

Checked the auto air vent on the boiler?

What happens if you don't top it up. Does it continue to drop to 0 or stabilise?