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Mend Pressure Heating System

hot water and pressure?

Why when i am running a bath i have to have the tap just open enough so the water just trickles out so that it's hot. I have noticed that when i do this the pressure gauge goes from 1.5 bars to 2.5 and does not return back down to 1.5 bars can any body help

ken
December 2009
Heating, Home Heating SystemsPressure Heating System
could it be the three way valve leaking into the heating system to make the pressure in the rands go up by 1 bar

ken
December 2009
plate heat exchanger needs cleaning out then for a guess

b
December 2009
they changed a spring something was not popping out properly

ken
December 2009
they changed the diverter valve

b
December 2009
It did do but had that done about 2 days ago by british gas

ken
December 2009
no heating off

b
December 2009
This is with the heating on

ken
December 2009
when you run the hot tap does the heating flow pipe get hot
its the 22mm pipe on the left

b
December 2009
It's a baxi combi 80eco installed in 2001

ken
December 2009
sounds like the plate heat exchanger needs looking at
what boiler have you got

b
December 2009

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Low Hot Water Pressure - Help!