Hotpoit Aquarius Wma58s - Wash Cycle Problems?

Hi.

Bit of a strange one this!

I had to take off the outlet hose and clean it due to a blockage. I
put the hose back on, turned the hot/cold taps back on, then did
a wash, to cut a long story short, every time i do a wash, no matter what wash cycle setting i use, may it be L,K,J,H,G,F,E,D, etc, it only washes on a hot wash.

Can anyone shed some light on this.

Thanks to all that reply!