Every diagram. Every time. In your pocket.
Never turn up to a job without the right wiring diagram again.
The Mr Combi Wiring & Controls Diagrams App gives you instant access to the most popular heating control diagrams—clear, colour-coded and easy to follow.
Whether you’re fault-finding, installing or refreshing your knowledge, this app saves time, stress and call-backs.

🧠 Covers the most-used brands
Includes wiring diagrams from:
* Danfoss
* Drayton
* Hive
* Honeywell Home
* Nest

⚡ Fast Fault-Finding Flow Charts
Get straight to the problem with 4 easy-to-follow diagnostic flow charts:
1. Heating ON when not required
2. No hot water available
3. Heating too hot
4. No heating available
Perfect for quick decisions while you’re on site.

📐 Clear, Colour Diagrams (99% in colour)
Includes:
* Mid-position Y Plan
* 2 Zone S Plan
* 3 Zone systems
* Mr Combi 16-way 2 Zone (colour quick guide)
* Schematics
* Mid-position valve operation
* Honeywell Home wiring centre explained

📱 Built for heating installers and electricians of all levels
* Works in portrait or landscape
* Two-finger zoom for close-up viewing
* Easy to read on phone or tablet
* Suitable for all skill levels

📘 Plus more industry diagrams
Based on content from Mr Combi Wiring Controls Book 3, including systems used by:
Baxi · Ideal · Vaillant · Viessmann · Worcester Bosch

🔥 Download Now
Don’t guess. Don’t Google on site.
👉 Download the Mr Combi Wiring & Controls Diagrams App today
and carry every wiring diagram you’ll ever need—right in your pocket.