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Course overview

The two-day Fault Finding and Wiring & Controls course in Glasgow provides an immersive and practical learning experience for professionals in the field.

Day 1 focuses on fault finding, covering aspects such as boiler diagnostics with a multimeter, essential electrics, heat exchangers, software issues, and component testing.

Day 2 shifts to wiring and controls, teaching skills in wiring boilers and zone valves, working with smart controls, and understanding the complexities of wiring sequences and fault finding with flowcharts and diagrams.

This course is designed to enhance practical skills in realistic scenarios, ensuring participants are well-equipped to handle real-world challenges in their field.

Modules breakdown


The first day of our fault finding course is jam-packed with practical tips, advice and hands-on learning. Here are some of the things you will learn about:

  • Boiler fault finding with a multimeter
  • Essential electrics – Understand resistance, current and voltage testing.
  • Heat exchangers & blockages – Non-invasive fault-finding techniques to save time and money.
  • A fresh approach to software faults.
  • System design overview.
  • System controls and ancillary equipment diagnostics.
  • Component testing & troubleshooting including:
  • Pumps standard & ERP.
  • Diverter Valves.
  • Switches – hydraulic, Electrical, Pneumatic & Electromechanical relationships
  • Safety & Operational sequence controls and the relationship to volatile lockout.
  • Temp sensors & stats


Our wiring & controls course will help you master the wiring of boilers and zone valves.

Some of the topics you’ll learn on our wiring & controls course are:

  • 3 Port & 2 Port Controls: Control boards will be available on the course so you can learn on full systems with faults and wiring required from start to finish, just like they will be found in a customer’s premise for you to work in a very realistic scenario.  It’s all great on a board right in front of you when you can see everything, but real life is more difficult.  We can show you how to identify cables and the components they are connected to when they are far away from each other.
  • Programmers & Smart Controls: Learn how to use install them.
  • Zone Valves: Zone valves can have orange, white, brown or grey wires. We will teach you how to wire these without any confusion.
  • The Sequence of Wiring: This causes lots of problems for both gas engineers and electricians. You will be confident in the sequence of wiring after completing your training.
  • Fault Finding: Flowcharts for all potential faults, rooms & cylinder stats with and without voltage using your multimeter – our simple diagrams will demonstrate any faults.

Some of our clients who trust us with their training:


Why do I need this?

Not only can the skills and knowledge from this boiler repair course make your day to day job easier, but they can also make you money.

If you’re self-employed you can start taking on more work and have the opportunity to upsell boiler replacements if the boiler is beyond economic repair.

If you’re employed, greater skills make you a more valuable asset to employers with the opportunity to progress your career, earn more money and increase job retention.

If you’re a heating installer and the product you installed has an error, fails or doesn’t work out the box, it’s not a great customer experience having to wait on the manufacturer visiting the property for a breakdown. Some manufacturers take £100 deposit before attending, with the customer being responsible for the cost if it’s not a boiler-related problem, which can open up a can of worms.

The profit from one boiler breakdown could be enough to pay for this course.  The question is: can you afford not to learn boiler fault finding?

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Very positive feedback from all staff who were on the training, great trainers and they made the topic interesting and easy to understand.

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Other Information

Training manuals

Candidates will be given fault-finding handouts during their course.

What do I need to bring with me?

Learners should be dressed for practical work and wear steel toe cap shoes.

How do I book?

Call our office on 0808 164 2780 and speak to one of our friendly customer service team. They will discuss dates and availability and can take payment by debit or credit card to confirm your place.

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Our Centres Are Well Equipped

We have multiple service and repair workshops throughout our centres that incorporate a mixture of both old and new gas appliances. It’s equally important to be knowledgable about the decades-old appliances as it is to be up to date with the newest technology. A good knowledge of both old and new systems will be a substantial help for students when working in our industry. We are able to simulate real-life faults and scenarios on these workshops to gradually build your experience and confidence.

Combi Boilers
training on gas fires during gas engineer course
gas boiler training theory on a whiteboard

Frequently Asked Questions

Frequently Asked Questions about our boiler repair courses in Glasgow, Scotland.

What boilers are available on your fault finding courses?

We have a large range of appliances to work on with over 50 working gas boilers available for fault diagnosis & breakdown training.

Manufacturers include: Vokera, Worcester Bosch, Vaillant, Ferroli, Alpha, Baxi, Ideal, Navien, ATAG, Intergas and more.

Where is your fault diagnosis course held?

Our course is held in Paisley, Scotland, but we have gas safe engineers from all over the country attending as far as England & Wales.

General topics

Our boiler fault finding courses are designed for entrants of all levels and cover a range of topics to help participants gain a deeper understanding of boiler parts, servicing, and maintenance. The course covers the principles of boiler function, including the circuits, and provides hands-on experience with the use of tools such as multimeters. The course is designed for participants with qualifications such as an NVQ or an ACS in domestic gas.

The course covers topics such as installation, isolation, and the use of multimeters to diagnose faults. Participants will learn about the maintenance of boilers, including regular servicing and the replacement of parts as required. By the end of the course, participants will have a good understanding of the products and equipment used in boiler maintenance and be able to diagnose and repair faults with confidence.

Where do learners travel from?

Our course is very popular - we have learners travelling from all over Scotland such as; Edinburgh, Fife, Aberdeen, Ayrshire, Dundee, Perth and even students traveling up from England.