presure jumps

[yrass]

hi .my boiler shows 1bar on pressure gauge when is cold but it jumps to 2 bar when is hot . is it normal?

 

[yrass]

and one time overflow pipe on outside wall was passing water

 

[gigz]

What do you mean by jumps ? It is normal for the water expanding to raise the pressure in the heating circuit. Make sure you have the filling loop disconnected after topping up. If you literally mean the gauge "jumps" its probably just sticking, try flicking it (as long as its giving a true reading its nowt to worry about)

 

[yrass]

thank you. two days ago i had done bathroom by one guy. i know it is stupid but he did not put trap under the basin and I must do that by myself.