Troubleshooting Advice

Expert troubleshooting boiler and heating guides from our Gas Safe registered engineers in Milton Keynes.

17 articles in this category.

Baxi Boiler Fault Codes Explained

The Baxi fault codes homeowners see most, what each one is telling you about the boiler, and which are safe to reset versus which need an engineer.

August 29, 2026

8 min read

Troubleshooting

Boiler Not Firing Up? Causes & Fixes

A boiler that has power but will not ignite usually has a pressure, condensate or ignition fault. Here's the order to check them in before calling anyone.

August 28, 2026

7 min read

Troubleshooting

Boiler Keeps Turning Off? Short Cycling

A boiler that fires and stops repeatedly is short cycling. Here's what causes it, why it shortens boiler life, and the fixes in order of likelihood.

August 28, 2026

7 min read

Troubleshooting

Boiler Kettling: Why It Rumbles

Kettling is limescale and sludge on the heat exchanger causing water to boil locally. Here's the chemistry, the damage it does, and what actually stops it.

August 28, 2026

7 min read

Troubleshooting

Glow-worm Boiler Fault Codes: Full List

What each Glow-worm fault code means, which you can clear yourself, and which need an engineer. Covers the F and S codes across the current range.

August 28, 2026

7 min read

Troubleshooting

Vokera Boiler Fault Codes: Full List

What each Vokera fault code means, which are safe to clear yourself, and which need a Gas Safe engineer. Covers the common A, E and F codes.

August 28, 2026

6 min read

Troubleshooting

Boiler F1 Error: What It Means and How to Fix It

An F1 code on an Ideal or Glow-worm boiler means low water pressure. How to clear it safely at the filling loop, and what it means if it keeps coming back.

May 15, 2026

6 min read

Troubleshooting

Ideal Boiler L2 Error: Causes and Fixes in Milton Keynes

L2 on an Ideal Logic or Vogue means the boiler tried to light and could not confirm a flame. The safe checks you can do yourself, what an engineer looks for, and how to stop it coming back.

May 15, 2026

6 min read

Troubleshooting

Why Is My Boiler Leaking Water?

A leaking boiler is never normal. The six most common causes, what the position of the drip tells you, what is safe to do yourself and when to call an engineer.

May 15, 2026

7 min read

Troubleshooting

Boiler Making a Banging Noise? Causes and Fixes in Milton Keynes

A banging or rumbling boiler in Milton Keynes usually means kettling: limescale and sludge on the heat exchanger. What each noise means, what to try, and what fixes it.

May 15, 2026

7 min read

Troubleshooting

Low Water Pressure in Your House?

Weak taps and a feeble shower? Low mains water pressure has several causes. Here's how to diagnose it, who's responsible, and how to fix it in Milton Keynes.

May 15, 2026

8 min read

Troubleshooting

Vaillant F75 Error Code: Causes and Fixes for MK Homes

F75 on a Vaillant ecoTEC means the boiler saw no pressure rise when the pump started. What causes it, the safe checks you can do yourself, and when it needs a Gas Safe engineer.

May 11, 2026

7 min read

Troubleshooting

Vaillant F28 Error Code: Causes and Fixes in Milton Keynes

Vaillant F28 means the boiler tried to light five times and could not. What causes it in Milton Keynes homes, the three safe checks to do yourself, and when to call a Gas Safe engineer.

May 11, 2026

7 min read

Troubleshooting

Vaillant F22 Error: Low Pressure Fix for Milton Keynes Homes

Vaillant F22 means the heating system has lost water pressure. How to repressurise it yourself in five minutes, how to find the leak that keeps bringing it back, and when to call an engineer.

May 11, 2026

7 min read

Troubleshooting

Worcester Bosch EA Error: Causes and Fixes in Milton Keynes

EA on a Worcester Bosch Greenstar is an ignition lockout: the boiler could not confirm a flame. Three safe checks to do yourself, what an engineer looks for, and how to stop it recurring.

May 11, 2026

6 min read

Troubleshooting

Boiler Losing Pressure? 7 Causes and How to Fix Each

Boiler pressure keeps dropping? The seven most common causes, how to tell which one you have, what you can fix yourself and when it needs an engineer.

May 11, 2026

7 min read

Troubleshooting

Radiator Not Heating Up? Eight Causes and Fixes

One radiator stone cold while the rest work? Match where it is cold to the cause, fix most of them yourself, and know which ones need an engineer.

May 11, 2026

7 min read

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