Common Boiler Problems

It is common for your boiler to break down at least once a year. Breakdowns can be caused due to a faulty component within your system, the change in weather or it could be down to the age of your boiler. At MCR Gas, we understand the stress that boilers can bring. That is why we are here to assist you with any of your concerns or queries that you may have. All of our engineers are Gas Safe registered and are experts at repairing, servicing and installing boilers.

Common boiler problems

Common Boiler Problems

We’ve outlined some of the most common boiler problems below:

1. Boiler Switches Off

One of the most common boiler problems that we face is your boiler cutting out during operation. This is normally caused due to low pressure. Begin with checking your pressure gauge to make sure it’s at the right level, then bleed your radiators which will help alleviate any pressure. If in doubt, always contact a Gas Safe engineer for advice or assistance on any boiler issues you may have.

Other reasons that your boiler switches itself off:

  • The thermostat fails to work
  • The pump leaks or is broken
  • The valves are closed and not allowing water into the boiler

2. Unusual Boiler Noise

If your boiler produces a low hum, this is normal. However, loud or unusual noise can be a sign of a serious problem. Different sounds indicate different issues. A whistle or a gurgle normally means that trapped air is inside the system pipes or from the boiler. Bleeding your radiators should solve this problem. If this fails to work, it is best to call an engineer to locate and repair the problem that the noise is causing.

3. Burst Pipes

Burst pipes can be caused by freezing, water pressure or failing to complete simple maintenance checks. To prevent burst pipes from happening, make sure your home is insulated and annual servicing. At MCR Gas, all of our engineers are highly experienced in burst pipe repair and will be happy to offer any advice on how to prevent this from happening.

4. Frozen Pipes

Every system has a condensate pipe. This is usually situated outside. The pipe transports acidic water produced as the boiler operates as a result of waste gas. Pipes that are placed outside are prone to freezing during the winter. Boilers will normally display a warning signal when a pipe is frozen. This problem can be fixed by locating the pip and pouring warm water over it using a hot water bottle, warm cloth or warm water from a kettle to help it function again. You will then need to reset your boiler which can be found in your manual. If you feel unsafe performing this procedure, MCR Gas are always happy to help.

5. Cold Radiators

If your radiator is not heating up normally, this may be a result of built-up sludge or air in the system. If the top of your radiator remains cold this means that they need bleeding. This process is quite simple which you can do yourself at home. If some of your radiators do provide heat and some do not they may need balancing. This can be performed by adjusting the valves on all your radiators to ensure they are receiving enough hot water. If these solutions don’t work for you, then it must be a build-up of sludge in the boiler which is preventing the flow of hot water. It is not safe to attempt to remove sludge by yourself. You will need a professional system clean called a power flush to repair your system. We provide this service at MCR Gas and help to restore your system.

6. No Pilot Light

The pilot light is the small blue flame in your boiler that keeps the burner lightened. If this light stops burning then your system is not working efficiently. Normally, the thermocouple is broken and is corrupting the gas supply. To reignite the light you must check the gas supply for issues. Remember to look at the instructions manual. If there is a gas issue, call our engineer.

7. Water Leakage

Determine where the leakage is coming from. Determining the cause can be tricky. Normally an internal component of the boiler, for instance, a pressure valve is broken. If your boiler hasn’t been fitted properly then this can cause leakage or corrosion. If this happens, contact our emergency plumber as soon as possible. This will prevent any more damage caused to your boiler and get your system repaired quickly and efficiently.

Annually Service Your Boiler

Boilers are an important part of keeping your house warm and will need maintenance for them to continue working efficiently. Your boiler should be serviced every 12 months. During a boiler service, your engineer will check all the components of your boiler to see if they are working correctly. This will help highlight any potential issues before they become an emergency. The engineer will be able to schedule a repair day at your convenience. Schedule an appointment with MCR Gas and we will complete the service as quickly and efficiently as possible.

At MCR Gas, we care about our customers. We are happy to help you with any plumbing demands from burst pipe repair to boiler installation, servicing and repairs. Contact us today for any advice or queries you may have.

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