Vaillant ecoFIT diverter valve service with a Fit Once cartridge (inc later Glow-worm models)

How to service a FIt Once cartridge that has been installed in the Vaillant ecoFit and Home range of boilers and later Glow-worm models. This video demonstrates how quick and easy it is to replace the seal canister when a Fit Once™ cartridge has been installed. The replacement seal canister comes with full fitting instructions.
Fit Once™ is manufactured by Buycombi Ltd and is compatible with Vaillant ecoFit and Home range of diverter valves and later Glow-worm boilers. Check your boiler compatibility on our shop page, see link below:
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