One of the most common boiler issues, is no hot water, this may be due to a loss of water pressure which is a relatively easy problem to solve. Anyone can do this and in just a few steps you will have hot water. Repressurising the boiler means allowing more water to enter the system from the mains supply, which is usually done by a filling loop.
Here is how to top up your boiler.
- Check the pressure on the boiler by looking at the gauge, you will see a low and a high-pressure section indicated usually in red.
- Now check the needle on the gauge and see whether this is in a low pressure or high-pressure zone.
- If your boiler is reading less than one bar, that shows that you’ve lost pressure and it needs to be topped up.
- Make sure your boiler is switched off
- There should be two valves underneath your combi-boiler, open both of these valves (you should hear the water coming through)
- Leave these open until you see the pressure gauge rise out of the low-pressure zone and allow this to reach 1.5
- Now switch off both valves
- Switch the boiler back on (you may have to press the reset button)
If you are in doubt on how to re-pressurise your boiler system or have done the following steps but are having continuing problems with your hot water, please consult a heating engineer.
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