I can't figure out the plumbing on our washing machine.
There's a hot and cold tap with hoses to the washing machine. The hot tap had been turned off (the washing machine came with the house) and I have never turned it out. I went away and when DH did the wash he turned the hot tap on and it started to leak (even after he turned the tap bit off). Then the the hose fell off (obviously dodgy original plumbing!) so now every time I do a wash the hot hose has to go into a bucket and it fills up with water.
Can someone please explain to me how the water is coming from the washing machine when it was plumbed to take hot water from the tap 
I want to try to fix it DIY wannabe but I think I need to understand this first!