Master heating controls with confidence
Struggling with Y-Plans, S-Plans, wiring centres and motorised valves?
The Mr Combi Wiring & Controls App shows you exactly how two-port and three-port systems work — and how to wire, test and fault-find them properly.
No guesswork. No crossed wires. Just clear, step-by-step training you can trust when you’re standing in a customer’s home.

🚀 What you’ll learn
This in-depth video course teaches you:
* How heating control systems actually work
* How to wire two-port (S-Plan) and three-port (Y-Plan) systems
* How to test the system safely and correctly
* How to diagnose faulty stats, valves, wiring and controls
* How to follow the correct sequence of operation
* How to avoid common and costly wiring mistakes
Perfect for:
* New engineers
* Installers moving into breakdowns
* Experienced engineers who want to sharpen their fault-finding

📲 19 Chapters – 73 Minutes of Brand New Content
You get 19 easy-to-follow chapters covering:
* Introduction to Systems
* System Overview – Two-Port
* System Overview – Three-Port
* Tools & Testing Equipment
* Programmers
* Room Thermostats
* Cylinder Thermostats
* Two-Port Valves
* Three-Port Valves
* Wiring Centres
* Sequence of Wiring – Two-Port
* Sequence of Wiring – Three-Port
* Wireless Controls
* System Testing – Two-Port
* System Testing – Three-Port
* Fault Finding – Two-Port
* Fault Finding – Three-Port
* Frost Protection
* Automatic Bypass Valves

🎯 Learn at your own pace
Pause, rewind and replay whenever you need. Whether you’re on-site or at home,
everything is explained in plain English with real-world examples.

🔥 Download Now
Stop guessing. Start wiring with confidence.
👉 Download the Mr Combi Wiring & Controls App today
👉 Or unlock it as part of the full Mr Combi App Bundle and put expert training in your pocket.