Bosch – Upright WOK2001 Washing Machine
Thanks for your suggestions, I’ve already replaced the pump, and blown down the waste pipe which seems very clear. What I’ve noticed is that when the pump is running the sump hose becomes squashed up and theres a suction sound from what seems like the vent hole at the rear/top of the machine. It’s as if theres a vacuum being created within the drum as the water is very slowly being drained away?