Comments on: Have a combi boiler with low water pressure how do I increase it ?

By: Maeve Mcdougall

Maeve Mcdougall — Sun, 08 Jun 2008 22:34:19 +0000

Normally, you will find a little tap valve under the boiler, this comes from the mains cold water. There may be some kind of braided flexi hose attached to this, for filling the heating system. Turn this tap valve gently till the pressure rises back to 1 1/2 bar.

If the pressure has dropped, there may be a problem(leak) with the heating system, or the boiler itself.

Keep a close eye on it.

By: Maryjane Prior

Maryjane Prior — Sat, 07 Jun 2008 09:21:22 +0000

under the boiler should be an open space look up into it and you should see two little taps like the ones that connect your washer to the pipes, open them both at the same time and It will repressurize you heating system. They should be coloured blue.

By: Cannon Lloyd

Cannon Lloyd — Wed, 04 Jun 2008 20:08:24 +0000

You should have a plastic key which when inserted into location under boiler turn anti clockwise 90degrees then open valve next to it until gauge reads 1. 0 and shut off. REMOVE KEY.Loss of pressure is normal.Read manual

By: Cassie Bowden

Cassie Bowden — Wed, 04 Jun 2008 16:10:38 +0000

depends on type u have.
mine has 2 taps/levers on pipes just below.
i have to open both till pressure builds up then close them!!!

By: Aliza Morton

Aliza Morton — Tue, 03 Jun 2008 20:29:20 +0000

theres a valve underneath which you turn,you can see the pressure rise,but dont go above 2 bar

By: Rodney Blackman

Rodney Blackman — Sun, 01 Jun 2008 12:11:45 +0000

Underneath the boiler is a little tap turn it slowly till the gauge reads the correct pressure