Combi Boiler Fault Finding: Repairing Combi Boiler Faults

Combi Boiler: Finding A Fault

Although this might not be what you want to hear – all combi boilers will eventually breakdown and need to be repaired or replaced. Even though they are very reliable, one day they will break down.

When this happens, we understand that you completely panic, then they have to be fixed and a logical approach to fault finding and repair is essential.

Servicing or fault finding on a combi boiler is about learning about many different types of boiler and realising they are all slightly different. At LC Joinery, our plumber understands about a variety of combi boilers therefore we are the right company for your needs.

Carrying out the work efficiently is about understanding the concepts and principles of combi boiler components and how they work, especially in relation to each other.

What Do We Consider When Dealing With Combi Boilers?

• Combi boilers have been installed in the UK since approx 1980
• Combi boilers last 15 years or more (approx)
• There are free standing and wall mounted combi boiler options
• There are traditional and balanced flue options
• There are standard efficiency and high-efficiency condensing boiler models
• There are a range of outputs for each model
• There are a range of models to suit varying budgets
• Models change and evolve substantially about every three to five years

Related Content:

Boiler Fault Finding – Boiler Repair Service Fife and Edinburgh

Combi Boiler Models

There are hundreds of models and many variations therefore it is very important that we have the knowledge on them.

Scenario

If the fan is running but there is no ignition, the fault is at or after the fan but before the boiler firing. This is always the same. It will be a fault with the fan speed, flue airways, air pressure hose(s), thermistor(s), air pressure switch or its connections, printed circuit board, gas valve, ignition components, or condensate pump.

All these components need to be checked unless it is established that the boiler fires in domestic hot water mode but not in central heating mode.

A logical approach is required to quickly track down, isolate, and repair the fault.

Many leading manufacturers offer courses on the installation, service, fault finding, and repair of their combi boilers. Accompanying these hands-on courses are the manufacturer’s installation, service, repair, and fault finding instructions.

A combi boiler should be serviced regularly, ideally every year, by a competent person and this person must be registered, as this is the law.

Fault Finding On Combi Boilers

Fault finding on combination boilers is about solving the problem.

The problem is that the combi boiler is failing in its comfort role.

It is either failing in its heating role or failing in its hot water role or both. Whichever fault diagnosis procedure is used, our objective is always to achieve:

• A fast and accurate diagnosis
• Minimum shut down time
• Effective repairs

It is important to us to use a logical approach to fixing the boiler and for it to deliver the full capability.

Get in touch with us today so we can identify the fault on your combi boiler.