Common Potterton Boiler Problems & Repair Advice

Common Potterton Boiler Problems & Repair Advice

Common Potterton Boiler Problems & Repair Advice

If the worst happens and you’re left with a broken boiler, it could be easy to fall into a state of panic as the water runs cold and the radiators don’t turn on. At this point it could be easy to not know what to do but it doesn’t have to be that way.

Some of the most common boiler faults can be resolved without even having to get in touch with an engineer and with this guide you’ll know which ones.

If an engineer is needed, or your in any doubt whatsoever always consult one. You can get free boiler repair quotes with our service.


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Who are Potterton?

Potterton manufactured their first boiler in 1850, since then they’ve grown to provide over 7 million homes with dependable users. You can find out even more about Potterton and their range of boilers with Boiler Guide.

Top 5 Potterton Boiler Problems

  1. Radiators not reaching temperature

    There are sensors in your boiler that monitor the temperature of the water, they’ll let the boiler know when the water is at the right temperature so it can turn off. Should there be an issue with the sensors, often caused by limescale in the pipes, then the boiler can turn off way before your radiators have reached the desired temperature.

  2. Error code E119

    This error code means that the pressure of your boiler is too low, caused by either faulty pump seals, a leaking pressure release valve or broken heat exchangers. You can top up the pressure yourself, use our guide to low boiler pressure for more information, but there’s likely to be an ongoing issue which a Gas Safe engineer will need to take a look into.

  3. No hot water

    If there’s no hot water coming from your taps, then there could be many potential causes but one of them is an issue with the diverter valve. The diverter valve is responsible for directing hot water to either the radiators or taps and showers. If it gets stuck then only one of these will be getting the hot water. You’ll need a Gas Safe registered engineer to resolve this issue.

  4. Frozen condensate pipe

    Condensate pipes are responsible for transporting acidic water, that’s caused by waste gas, away from the boiler outside into a drain. Due to its location, it faces the risk of freezing in the colder months. You’ll find guides to thawing out the condensate pipes around the internet but if you feel the slightest bit unsafe get in touch with a Gas Safe registered engineer.

  5. Boiler keeps turning off

    If your boiler is experiencing low water pressure, thermostat issues, a lack of water flow due to a closed valve, then your boiler may keep switching off. If you can’t put your finger on the issue, it’s a good idea to call out a Gas Safe registered engineer.

Which Boiler Issues Need an Engineer?

To help you identify the potential causes of some common boiler problems, we’ve put together the table below so you’ll know if you’ll 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 should display a fault code or warning notification (consult your boiler manual) Yes
Thermostat issues Thermostat may be turned off or not set to the correct settings (time etc.) Consider replacing the thermostat
Kettling Limescale or sludge building up on your boiler’s heat exchanger Yes
Radiators not getting hot Sludge or air may have built up in the system or there’s 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 or the pump not circulating the water in the system properly Yes

Error Codes

If your Potterton boiler is displaying an E followed by a series of numbers then it’s letting you know that there’s a fault. If you’re seeing an error code then you need to know what it means so take a look through our list of Potterton error codes to find out.

Should You Replace Your Potterton Boiler Instead?

An old Potterton boiler could be losing you money, for potential savings of up to £305* a year in a detached home it might be worth considering a new boiler. Use the table below to find out 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 You Choose to Replace a Potterton Boiler?

If you’ve been considering replacing your Potterton boiler with a brand new one then you need to think about who will carry out the installation. Your choice will come down to a national company or a local engineer.
In many cases, a local engineer will offer a very competitive rates and as they’re more of than not, a man and his van, you’ll be receiving service with a personal touch throughout.

Potentially slightly more on the expensive side, branded manufacturers will be able to offer extra services such as ongoing boiler cover and you’ll have big brand protection, a great bonus.

When thinking about who you’d like to carry out the work, always remember to compare up to 3 quotes rather than just going with the first one you receive to give you more chance of getting the perfect deal for you.

Boiler Insurance and Ongoing Cover

Boiler insurance might be something you want to consider if your boiler warranty has come to an end. It can be simply taken out with your energy supplier but there’s absolutely no obligation to do so. The boiler insurances worth making a note of will offer an annual service and safety inspection.

Potterton Boiler Warranty

The wide range of Potterton boilers offering varying warranty lengths from 1-7 years. Find out even more about what’s covered by their warranties with our guide to Potterton warranties.

If you need an engineer to take a look at your boiler, send us an enquiry to receive free quotes from trusted engineers near you.

*According to the latest figures from the Energy Saving Trust


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