Aquaflow Washing Machine will not take in conditioner?

Machine not taking in conditioner at the end rinse. Cleaned area above conditioner tray with toothbrush. No Joy. Possibility it might be cold water valve for this problem. I have basic engineering skill. Where can I buy a valve and get instruction for dismantling, installing the valve, please. It has, I think, the following on the front: FLEHI 00SE, 6Kg 1200 max spin. Thanking you in advance