Baxi Bahama Combi (another query)

[howy1]

When my heating is on the pressure gauge is going well into the red ! but its not blowing safety valve - yet .
I have checked temp of rads and they seem normal , i also checked expansion vessel when system was cold and the pressure is 1.3 bar which is roughly what manuel says , if the expansion vessel has right pressure could it still be knackerd ! or are there other things that could cause this .
cheers Mark

 

[oakland99]

how long does it take for the pressure to rise, if the expansion vessel pressure is ok you could have a blocked tube leading to expansion vessel. this would give the impression vessel has no charge in it..

 

[gas_man_gaz]

did ya check the exspanion vessel with the system drained?

 

[howy1]

Thanks for replies , no it was not drained when i checked pressure so what your saying is that i was measureing the system pressure rather than the vessel ! . I will check to see how quick pressure comes up , am i looking at a rapid rise .
Cheers Mark

 

[baxpoti]

Fit need a new expansion vessel, job done!

 

[Agile]

Check the pressure on the EXV and watch it as you depressurise the system.

If it does not go down then the communication pipe is blocked.

If it does go down then repressurise it to 0.9 Bar.

Tony