Boile Pressure and Timer Settings

[ilu]

Hi,
I have a Worcester Bosch combi boiler(35 CDI)that was newly installed a couple of years ago. Now i have two problems with it:
1. The central heating timer is periodically switched on (at least once every three weeks)even when i set it to 'Off' due obviously to warm weather.
2. The pressure gauge keep droping to 0 even when i've recently fill the system up.
Can you please advise me what the could be causing these problems?

Many thanks.😕

 

[Seb.Pickering]

Cant help with 1, but 2 sounds like you have a leak somewhere. Have you pressured it up and checked pipeworks and joints ?

 

[bathroomboy]

Yep got a leak and also some Worcester bosch have a built in feature which will run the system for a short period to prevent the pump failing in summer when not being used, hope this helps.

 

[Jackbooted]

iLu, try putting a little plastic bag over the pressure release pipe that should be sticking out your wall below the flue outside, sometimes these let a tiny amount past, but over a few days can drop the pressure.
mike