The result – boiler back up in and running in 5 minutes and this simple step by step guide for anyone who wants to know how to increase boiler pressure.
A Girl’s Guide to Re-Pressurising Your Boiler
Step 1 – If your pressure drops it could be due to a leak form the boiler itself or form a radiator, so the first step is to check for leaks.(if you do find a leak then you probably are going to need a plumber)
Step 2 – Identify the water pressure taps. These are located at each end of the silver braided pipe and are usually black. In the picture below you can see a circular tap on the left just below the clear pipe and on the right its a rectangular tap which sits in line with the 2nd pipe that runs vertically up into the boiler. (important note: there is a black stopcock higher up on the right – this is not the water pressure tap!)
Step 3 – Open the tap on the left by turning it 90 degrees anti clockwise, this opens the pipe.
Step 4 – The tap on the right is more like a lever, push this to the left and you will hear the water begin to flow through. (this lever can be quite stiff so you might need to apply strong pressure to open it)
Step 5 – The pressure will start to increase on the pressure gauge, when it reaches 1 bar turn the taps back to their original positions, the lever shaped one first.
Step 6 - Turn the dial on the front boiler panel to the off/reset position and you will hear the boiler re-ignite and the green light will come back on.
Step 7 – Turn the dial back to hot water/heating option and voila you’ve fixed your first boiler!
When you’ve done this you might want to bleed your radiators to make sure you don’t have any airlocks in the system.
These instructions are based on a Vokera combi boiler, please let me know if you find them useful!