Combi boiler giving no hot water in Darlaston? The usual causes, quick safe checks, and when it needs an engineer to test and replace a part.
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A slow trickle may not be enough for the combi to sense demand and fire.
If only one tap is cold, it is that tap or its pipe, not the boiler.
A code on the screen tells us a lot. Write it down.
Low pressure can stop it firing. Around 1 to 1.5 bar is typical when cold.
The boiler make and model helps us bring the right part.
A combi boiler heats water on demand, so when the hot taps stop working but the heating carries on, the fault is nearly always in the part of the boiler that handles hot water. The usual suspects are the diverter valve sticking, the plate heat exchanger blocked with scale, or the flow sensor that tells the boiler a tap has been opened.
Before ringing, a couple of quick checks are worth doing. Open a hot tap fully, because combis need a reasonable flow to fire. Check the pressure gauge, and see whether the boiler display shows a code. If other taps are hot, the problem is with the tap rather than the boiler.
In Darlaston, most smaller terraced homes and flats run combis, and older ones tend to suffer with scale. Once we know the make and model, it is usually a single-part fix.
Usually the diverter valve, a scaled plate heat exchanger or the flow sensor.
You can check the tap flow, pressure and display. Anything inside the boiler needs an engineer.
Normally one part. We will tell you what has failed and agree the price first.
Usually yes. Should you ever smell gas, leave the property, do not use light switches and call the National Gas Emergency line on 0800 111 999.
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