Take your boiler fault-finding to the next level with the Mr Combi Fault Finding with a Multimeter App – now fully updated in high definition so you can see every test, probe and result clearly, wherever you are.

This powerful step-by-step video course gives you real-world skills you can use on every call-out, covering everything from basic checks to advanced diagnostics.

🚀 What you’ll learn
Get full access to 21 in-depth chapters including:
* How to use a multimeter properly
* The 4-Part Electrical Safety Test
* Testing thermostats, sensors, fans & pumps
* Checking diverter valves & expansion vessels
* Understanding the sequence of operation
* Diagnosing electrical and component faults
* And much more…
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Whether you’re:
* New to the trade
* Moving from installing into breakdowns
* Or an experienced engineer who wants to sharpen their skills
this app gives you the confidence to test, prove and fix faults faster and more accurately.
📱 Learn anywhere, anytime
Easy to follow, watch at your own pace, rewind, pause and replay whenever you need – perfect for on-site or at home.

🔥 Download now
Don’t guess – test and prove it.
👉 Download the Fault Finding with a Multimeter App today
👉 And unlock ALL Mr Combi Apps to build the ultimate engineer’s toolkit in your pocket.
Install smarter. Diagnose faster. Fix with confidence. 💪