Common ATAG Boiler Problems & Repair Advice

Common ATAG Boiler Problems & Repair Advice

ATAG Boiler Problems and repair advice

It’s easy to forget that there’s a boiler in our homes working hard to provide heating and hot water every day. That’s until you get up for work and sleepily step into a freezing cold shower when the realisation hits you like ice cold water to the face, the ever-so faithful boiler you haven’t heard a peep out of has packed in.

This could be the point where chaos descends upon the home and nobody knows exactly what to do but don’t worry, it doesn’t have to be that way. Some common boiler problems can be resolved without even having to call an engineer out but if an engineer is needed, (and if in doubt always get in touch with an engineer) you can get a free boiler repair quote with our service.

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Who are ATAG?

Almost 70 years of experience designing and manufacturing boilers has seen ATAG grow far beyond their home in the Netherlands to share their passion for engineering with countries around the world. Find out more about this manufacturer and their full range of boilers here.

Top 5 ATAG Boiler Problems

  1. System coming on without being asked for

    ATAG boilers with digital wireless room stats may lead to the boiler turning on unexpectedly. If this happens, just double check that the minimum room temperature setting is fairly low (8°C to 12 °C) because if it’s too high then when the room temperature falls below that temperature the wireless room stat will alert the boiler and heat the house up.

  2. Error code 118

    This error code means that the pressure is less than 1 bar or pump pressure increase is too low (no pump detection).

  3. No heat or hot water

    Possible causes can be broken diaphragms and airlocks, issues with the thermostat, low water levels or failure of motorised valves. It’s a good idea to check if an issue with boiler pressure or your thermostat are causing the issue.

    If you think that your boiler needs a new part then you’ll need to get a Gas Safe registered engineer on the case. They’ll be able to thoroughly diagnose the problem and replace any broken parts where necessary.

  4. Radiators not heating up

    If your radiators aren’t heating up or are only heating up at the bottom then they may need to be bled. This is something you can carry out yourself and if you feel up to the task then our guide to bleeding radiators can take you through the process.

  5. Losing pressure

    Low boiler pressure can lead to your central heating system not functioning properly. Checking a boiler’s pressure level can be done by simply taking a look at it’s built in pressure gauge, if it’s below 1 you may have an issue. Get to know more with our guide to low boiler pressure.

Which Boiler Issues Need an Engineer?

We’ve put together a list of the most common boiler symptoms, to give you an idea of what they might mean and whether you’ll be able to fix it yourself or need 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 Could be a water leak in the system, the pressure relief valve needs replacing or due to recently bleeding radiators No, unless there’s a leak
Frozen condensate pipe Your boiler will often 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 your boiler’s heat exchanger Yes
Radiators not getting hot You will need to bleed the radiators which doesn’t require an engineer unless you don’t feel like carrying out the task yourself. Yes
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 or the pump not circulating the water in the system properly Yes

Error Codes

When your ATAG boiler has an error, you’ll see an error symbol appear on the screen accompanied by a code, which is usually a 2-3 digit number. If you’re seeing an error code then check our list of ATAG error codes to find out what it means.

Should You Replace Your ATAG Boiler Instead?

If you’ve had your ATAG boiler for some period of time then it’s worth considering a new one as you could be saving 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 ATAG Boiler?

If you think a new boiler is the right way to go then the next big decision is choosing who to replace it. The easy part is knowing that no matter who you get to replace a boiler they must be Gas Safe registered. Now that we’ve got that part out of the way, your choice ultimately comes down to a local engineer or a national company.

Local engineers can offer a very competitive rate and as they tend to be just one man and his van, you’ll get a very personal service from the same person throughout your communications. It’s always a good idea to get a quote from more than 1 engineer to make sure you’re getting the best deal, we recommend getting up to 3.

While branded manufacturers may be slightly more on the expensive side, big brand protection is a huge bonus and they can provide extra service such as ongoing boiler cover.

Boiler Insurance and Ongoing Cover

If your boiler warranty has expired, then boiler insurance is a possible option. You can take out insurance with your energy supplier but you’re absolutely no obligation to do so. When comparing insurance, the best ones will include an annual service and safety inspection, so keep an eye out for them.

ATAG Boiler Warranty

ATAG boilers come with 10 years warranty as standard, giving you peace of mind well after your boiler is installed. We’ve put together a complete guide to ATAG warranties so that you know exactly what to expect. One thing you’ll need to know when it comes to any boiler warranty, including ATAG boilers is that the unit must be serviced annually or the warranty will end early. Find out what a service involves by visiting our guide to ATAG boiler services.

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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