Common Alpha Boiler Problems & Repair Advice

Common Alpha Boiler Problems & Repair Advice

Alpha Boiler problems and repair advice

After we’ve had a boiler installed, we hope that we can just leave them alone to provide heating and hot water to our homes on a daily basis. We all dread the day that the hot water starts running cold and realise that there’s an issue with the boiler.

Rather than sending the house into chaos, an issue with the boiler may not even need the expertise of an engineer. Many common boiler problems in a few simple steps yourself, but if in doubt always consult an engineer and remember that you can get a free boiler repair quote with our service.

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Who are Alpha?

Recognised as one the leaders in the UK heating industry, Alpha carry over 50 years of experience manufacturing a variety of heating boilers. You can find out more about Alpha and their full range of boilers on Boiler Guide.

Top 5 Alpha Boiler Problems

  1. Losing pressure

    Low boiler pressure can lead to the central heating system not functioning as it should. You can check a boiler’s pressure level yourself by taking a look at the inbuilt pressure gauge, if it’s showing anything below 1 then you may have an issue. Find out more with our guide to low boiler pressure.

  2. Lukewarm water

    As some boilers get older, some of the parts can get worn down and cause the running water to only be lukewarm. This may be caused by a faulty thermostat, faulty thermistor, blocked diaphragm or a faulty diverter valve, which will need the expertise of an engineer.

  3. A and B flashing on and off at the same time

    If you’re seeing the A and B on your boiler flash at the same time then that you means there’s a blocked flue or fan fault and an engineer will need to be called out.

  4. Boiler is unresponsive

    If your boiler isn’t responding then start off by checking the pressure, If it’s below 1 bar then it will need to be topped up. In some cases, condensate pipes can be prone to freezing in extreme weather if they’re unprotected or have been incorrectly installed. If the pressure doesn’t need topping up, then check the condensate pipes.

  5. Loud noises coming from the pipes

    Hearing some strange and unfamiliar sounds from your boiler can be a strong indication of kettling, which is generally caused by limescale buildup, a faulty thermostat and inadequate water pressure which can cause ongoing problems with the central heating system.

  6. Which Boiler Issues Need an Engineer?

    Not sure which boiler issues you can tackle yourself? Take a look at the table below to see the most common boiler problems, what they might mean, and whether you’ll be needing an an engineer.

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    Problem Possible Cause Do you need an engineer?
    No heat or hot water Broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat or low water levels Yes
    Leaking and dripping Most common cause is a broken internal component but it will depend where the water is leaking from Yes
    Banging, whistling or gurgling noises A common cause is air in the system, alternatively it could be that the water pressure is too low or it’s kettling Yes
    Pilot light goes out Could be a broken thermocouple which is stopping the gas supply Yes
    Losing pressure There could be a water leak in the system, the pressure relief valve needs replacing or the radiators have been bled recently No, unless there’s a leak
    Frozen condensate pipe Your boiler should display a fault code or warning notification Yes
    Thermostat issues Thermostat may be turned off or not set to the correct settings (time etc.) Consider replacing
    Kettling Limescale or sludge building up on the boiler’s heat exchanger Yes
    Radiators not getting hot Sludge or air build up in the system or an unequal distribution of heat You will need to bleed the radiators which doesn’t require an engineer unless you don’t feel like carrying out the task yourself.
    Boiler keeps switching itself off Could be low water pressure, a problem with the thermostat or a lack of water flow due to a closed valve, air in the system or the pump not circulating the water in the system correctly Yes

    Error Codes

    When there’s an error with your Alpha boiler, you’ll either see an error code or a series of flashing lights. If you’re unsure what the error code means then you can find out with our list of Alpha error codes.

    Should You Replace Your Alpha Boiler Instead?

    If your Alpha boiler was installed a long time ago then it could be time to consider a new one. Installing a brand new boiler could save you up to £305* a year in a detached home. Take a look at the table below to see how much you could be saving depending on your current boiler rating and property.

    House Type G (<70%) F (70-74%) E (74-78%) D (78-82%)
    Semi-Detached £200 £140 £120 £120
    Detached £305 £210 £180 £180
    Detached Bungalow £155 £105 £90 £90
    Mid terrace house £175 £120 £105 £105
    Mid terrace house £95 £65 £55 £55

    Who Should I Choose to Replace My Alpha Boiler?

    If you think that it’s time to part with your current boiler and install a new one then the next thing you have to decide is who you’ll be choosing to replace it, a local engineer or a national company.

    Branded manufacturers may cost a little bit more than local engineers but you’ll be covered by big brand protection, which is a huge bonus, and they could provide extra services, including ongoing boiler cover.

    Local engineers can offer very competitive rates and you’ll get a personal service from the same person throughout your installation. When considering engineers, don’t go with the first quote you receive, we recommend getting up to 3.

    Boiler Insurance and Ongoing Cover

    Taking out boiler insurance once your boiler warranty has expired is a option worth considering. This can be done with your energy supplier but there’s absolutely no obligation to do so. When comparing boiler insurance, keep an eye out for ones that offer annual service and safety inspections.

    Alpha Boiler Warranty

    The warranty of Alpha boilers depends on the model you decide to install in your home. Their Combi boilers come with 2-7 years warranty, 3-5 years as standard for System boilers and 3 years on their range of Regular boilers. Alpha also offer the opportunity to extend a warranty on some models by adding a Premier Pack to your purchase. Know exactly what to expect with our complete guide to Alpha warranties. To keep the warranty valid, you’ll need to arrange for your Alpha boiler to be serviced annually by a Gas Safe engineer.

    Send us an enquiry today to receive free quotes for a new boiler and find trusted engineers near you with our free service.

    *According to the latest figures from the Energy Saving Trust

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