No Hot Water - How To Test Plate Heat Exchanger - Combi Boiler not working

Plumber Training. How to check why your hot water isn’t working. Gas Engineer Training.
How to repair gas boilers. Testing to see if a plate heat exchanger is blocked.
How to test and how to find the correct parts.
Boiler not working how to check.
Combi Boiler not working, No hot water.
Blocked plate heat exchanger.

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