BROKEN BOILER MAIN 30HE

A repair carried out on a MAIN 30 HE COMBI BOILER in Stanford Le Hope ESSEX.

I was called out to repair this combi boiler because the customer wasn't happy with the performance of the hot water.

The hot water wasn't consistent and the temperature was fluctuating on demand.They was having problems with shower especially, as the water would go hot, cold, hot, cold and so on.

This is a common symptom with combo boilers and is usually down a block plate to plate heat exchanger.

Being an engineer assumption is never an option, as many different problems can give the same symptoms.

Upon further inspection i came across the problem.

In the photo on the left i am holding a broken hydraulic venturi.

This had broken off over time, meaning parts had travelled into the plate to plate heat exchanger causing a blockage.

Changing the plate to plate would not have solved the problem as the broken venturi would have caused the same problem even with the heat exchanger unblocked.

the hydraulic venturi was replaced, and the parts removed from the heat exchanger. once This was complete the boiler was back up and running leaving another happy and satisfied customer.