Fault Diagnosis – Boiler, Heating, and Hot Water Issues
Welcome to CAAN Services.
We are your first choice for resolving all heating and hot water issues!
Whether it’s an unexpected lack of hot water, blown pilot light, or central heating system malfunctions, our expert Gas Safe engineers are here to diagnose and fix your problems efficiently.
Is your boiler acting up? Book a repair now.
Understanding Your Boiler and Heating System
A well-functioning boiler and heating system is essential for your home comfort. It provides you with heating and hot water on demand.
When things go wrong though, it can lead to stress and discomfort.
Familiarising yourself with the components of your heating system helps you understand potential issues.
Some common components include the condensing boiler, hot water heater, diverter valve and condensate pipe.
Common Causes of Heating and Hot Water Issues
- Power Cuts – Power cuts can lead to loss of power in your boiler, disrupting the entire system.
If you notice your heating or hot water has stopped, check your power supply first.
If everything seems normal and your boiler is unresponsive, it may be time to call a Gas Safe engineer to investigate further.
- Reset Button – Sometimes the boiler may need a simple reset.
If you notice error codes or your system has stopped working, locate and press the reset button on your condensing boiler. This is usually found on the front of the unit.
If this doesn’t resolve the issue, it’s an indicator that professional help is required.
- Pilot Light Issues – The pilot light serves as the ignition source for your boiler.
If it’s gone out, your heating and hot water system won’t function.
Check if it can be reignited easily according to your boiler’s manual. If you have difficulty relighting it or if it goes out frequently, this could indicate a bigger problem, such as faults in the gas supply.
- Boiler Pressure – Low boiler pressure can lead to insufficient heating and hot water supply.
If your boiler pressure gauge falls below 1 bar, it may be time to re-pressurise your system.
If you notice fluctuations or persistent low pressure, it’s advisable to contact CAAN Services for a thorough diagnosis of potential leaks or malfunctions.
Emergency breakdown? Book in now.
Diagnosing Lack of Hot Water
A lack of hot water can stem from various reasons.
The expert service of our Gas Safe engineers can help you narrow down the issue.
- Broken Diverter Valve – The diverter valve is responsible for directing hot water to your taps and radiators.
If this component is broken, you may find your central heating system works, but the hot water supply is compromised.
In this case, a replacement diverter valve might be necessary to restore full functionality.
- Heating Element Failure – An issue with your hot water heater’s heating element can lead to insufficient hot water.
If the heating element is malfunctioning or broken, it will need replacement.
A qualified gas engineer will be able to quickly identify and resolve this issue, ensuring you have consistent hot water supply.
- Frozen Pipe – During the colder months, pipes can freeze and obstruct water flow.
If you suspect a frozen pipe is affecting your hot water supply, it is crucial to call CAAN Services for immediate help.
Our engineers will safely assess and resolve the situation, ensuring your system is back in working order while also providing tips on preventing future occurrences.
Book a visit.

When to Call a Professional
When is it time to call a professional?
If you’ve attempted to troubleshoot your boiler and heating system but find you’re still having issues, it’s time to contact CAAN Services.
Our team of qualified Gas Safe engineers will carry out a detailed fault diagnosis, identifying and resolving the problem efficiently.
No heating or hot water? Contact us now.
Identifying Fault Codes
Modern boilers often use fault codes to indicate issues within the system.
Familiarising yourself with the fault code will help you solve the problem.
If you encounter a fault code, take note and provide it to our engineers for accurate diagnosis.
They can quickly interpret the error and address the root cause of the problem.
The Expert Diagnosis Process
When you contact CAAN Services, our Gas Safe engineer will conduct a thorough diagnosis of your boiler, heating system and hot water supply.
The process includes:
- Preliminary Assessment – After arriving at your property, the engineer will ask questions to understand the symptoms and will inspect your heating and hot water systems.
- Comprehensive Inspection – The engineer will assess critical components, including the pilot light, boiler pressure, diverter valve and heating elements. A visual check of the condensate pipe will also be performed to ensure there are no leaks or blockages.
- Testing for Faulty Components – Testing for faulty components may involve using specific tools and measurements to determine the performance of gas appliances.
- Repair and Maintenance Recommendations – After diagnosing the issue, the engineer will discuss their findings and suggest the most viable solutions, whether it’s repairing broken components or providing maintenance advice.
Our Promise to You
At CAAN Services, we prioritise your comfort and safety.
Our team is trained to handle all aspects of boiler and heating system repairs and maintenance, ensuring that you receive a high quality service every time.
We operate with transparency and aim to explain issues clearly so you’re informed every step of the way.
Don’t let a lack of hot water or heating issues disrupt your daily life.
With CAAN Services, you’ll have a reliable partner on your side, armed with the expertise needed to restore your home’s comfort.
If you’re facing any heating or hot water issues, reach out to CAAN Services today.