Main / Baxi / Potterton Diverter Valve - How To Service / Repair / Assemble For Hot Water & Heating

REASONS YOU MIGHT NEED TO SERVICE / REPAIR THE DIVERTER VALVE:

Your radiators are getting warm whilst using the hot water

Your boiler is overheating and cutting out when trying to use the heating

The hot water is not getting as hot as it used to (it's sharing heat with the radiators)

It's leaking

A simple test to see if your diverter valve could possibly be a problem:

1.) Run your hot water

2.) Put your hand on the central heating flow pipe underneath the boiler

If the flow pipe is getting hot then either your diverter valve is faulty or your plate heat exchanger is blocked and forcing it's self back through the diverter and down the flow pipe.

This video is for these boiler models

MAIN
Main Combi 24
Main Combi 24 HE
Main Combi 30 HE

BAXI
Baxi Combi 105E
Baxi Combi 105HE
Baxi Combi 80 ECO
Baxi Combi 80 MAXFLUE
Baxi Combi 80E

POTTERTON
Potterton Performa 24
Potterton Performa 24 ECO HE
Potterton Performa 28
Potterton Performa 30 HE

& Any similar models I might have forgotten