Apps
Since starting on our apps, we’ve seen over 250,000 downloads! All our apps work on phones and tablets running both iOS and Android. Find out more from the links below.
Fault Finding with Multimeter – £4.99
You can now watch our fantastic Fault Finding, Testing & Multimeters DVD on your iPhone, iPad and Apple TV.
There are 21 Chapters showing you all about multimeters, how to carry out the electrical safety tests in full, how to test stats, fans, sensors and pumps, about diverter valves, expansion vessels and the sequence of operation. Learn at your own pace.
Suitable for new entrants, those moving from installing to repairs and existing breakdown engineers.
- Testing Equipment
- Multimeter Settings
- Electrical Safety Tests
- Earth Continuity Test
- Short Circuit Test
- Resistance to Earth Test
- Polarity Test
- Fault Isolation Procedure
- Sequence of Operation
- Pumps
- Testing Switches
- Water Pressure Switches
- Flow Switches
- Air Pressure Switches
- Fans
- Stats & Sensors
- Diverter Valves
- Domestic Heat Exchangers
- Expansion Vessels
- Water Hammer
- Airing Cupboards

You can see a preview of the videos contained in this app in our Shop.
Wiring & Controls – £4.99
Our Wiring & Controls app will help you master two and three-port controls by helping you to understand how they work and how to wire them up correctly. You’ll also learn how to fully test the system and some fault finding techniques, giving you the confidence you need when you’re at a customer’s house.
If you want to improve your skills installing or fault finding on Danfoss & Honeywell heating controls, this is the app for you!
The app contains 19 chapters with 73 minutes of all new content.
- Introduction to Systems
- System Overview – Two-Port
- System Overview – Three-Port
- Tools & Testing Equipment
- Programmers
- Room Stats
- Cylinder Stats
- 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

You can see a preview of the videos contained in this app in our Shop.
Wiring & Controls – Diagrams – £4.99
With special permission from Danfoss and Honeywell, we took their wiring diagrams and turned them into fantastic coloured wiring diagrams which are much easier to follow. We’ve been using these diagrams on our training course for over two years and everyone agrees that they’re essential for wiring up controls on two and three port installations.
- Colour diagrams for Danfoss and Honeywell systems
- 2 and 3 port systems
- Fully Wired diagrams – Shows every wire in the control circuit
- Live Wire diagrams – The earth and neutral wire have been removed for clarity
- Schematic diagrams – A simplified version of the circuit
- Stats diagrams – Only the thermostat circuit is shown
- Danfoss and Honeywell wiring centre schematics
- Frost protection diagrams
- Fault finding charts for Danfoss systems


Gas Rate Calculator & Guide
£4.99

Heatloss Calculator & Guide
£4.99

Gas Pipe Sizing Calculator
£4.99

Gas Ventilation Calculator
£4.99

Expansion Vessel Calc & Guide
£4.99
