Worcester Bosch Boiler Problems and Repairs
An issue can occur over time with every top boiler brand on the market, not just Worcester Bosch. What we would like to do here is help you deal with this issue if one does occur. Having a boiler that isn’t functioning correctly or not functioning at all can cause a lot of stress on the family, especially if it decides to happen in the colder months, winter.
Below we will help with a few of the common issues which you may be able to fix yourself rather than having to wait for a Gas Safe engineer. If the fault is more serious, always ensure you use a Gas Safe engineer to keep everybody safe.
* Loss of pressure from your Boiler:
A leak usually causes a loss of pressure. If the boiler is turned off for a period of time, or a pressure relief valve is faulty, this can also cause loss of pressure.
Next step: If you have your manufacturers manual and you feel confident, it is safe for you to try to solve this problem yourself.
- If the pressure gauge is below 1 bar, you can follow the manual steps to repressurise the boiler.
- If this does not solve the issue, you would need to contact a Gas Safe engineer.
* Leaking water from your Boiler:
Boiler leaking water is often caused by a faulty part or a loose connection.
- This issue is NOT safe for you to try to mend by yourself.
- Contact a Gas Safe engineer.
* Issues with your Pilot Light:
Issues with your pilot light going off can be caused by; deposit build-up in the system, broken thermocouple, or a faulty seal.
Next step: This is safe for you to check the following steps.
- Check the stopcock is turned on.
- Access your other gas appliances. If they do not work, contact your gas supply as it is a fault they need to correct.
- If the above is not an issue, contact a Gas Safe engineer.
* Frozen Condensate Pipe Issues:
During the winter months, the condensate pipe can freeze. The condensate pipe runs to the drain outside.
Next step: This is safe for you to try thaw the condensate pipe by following the below steps.
- By pouring boiling water, which is not scolding over the condensate pipe.
- By pouring boiling water, which is not scolding over a tea towel until it is soaked and then place the tea towel over the pipe.
- If you do not feel safe to do the above, contact a Gas Safe engineer.
* Kettling Noises from your Boiler:
Your boiler is making noises similar to a kettle, also known as clanking, rumbling, or banging.
- Contact a Gas Safe engineer as soon as you hear this noise.
- Once you have contacted the Gas Safe engineer, you could bleed your radiators.
- Bleeding your radiators will remove any limescale build-up or any air which is trapped.
* Heating or Hot Water Not Working:
There could be many reasons why your boiler is only allowing one of the two at once: only heating or only hot water or neither.
Faults could be coming from broken diaphragms, broken airlocks, or a broken thermostat.
- You can check the boiler pressure and the thermostat.
- If the boiler pressure and thermostat are working, contact a Gas Safe engineer as soon as possible.
- Your Gas Safe engineer will replace the faulty part to get your boiler up and running again.
* Radiators at the Top, Middle or Bottom Won’t Heat Up:
The above issue is often caused by a build-up of sludge in the system or trapped air in the system.
Next step: The way to remove trapped air is to bleed the radiators. It is safe to do so by yourself with a radiator bleed key.
- You will use the bleed key to open the bleed valve.
- Start at the top of the radiators, ensuring you open the valve very steadily.
- Never open the valve completely.
- A quarter or half turn should be enough.
- Have a cloth or a towel to catch the dripping water that appears once you gradually open the valve.
- Once the air stops seeping out and water drips appear, you can close the valve.
- If this doesn’t make your radiators heat up correctly, contact a Gas Safe engineer.
- The Gas Safe engineer will look at your system, which may need a power flush, or you may need to replace your radiators.
* Boiler Keeps Switching Off By Itself:
Boiler switching off could be because of a blockage that is preventing the water flow.
The boiler could have low pressure from a faulty thermostat, or a faulty pump.
- If you have your manufacturers manual and you feel safe to do so, you can repressurise your boiler if it appears to be at the wrong level.
- You can test the thermostat to ensure it is working correctly.
- If the pressure and thermostat are working correctly or the problem keeps happening, after re-pressuring the boiler, contact a Gas Safe engineer.
- The Gas Safe engineer will ensure to fix the problem or replace a part with that is the issue.