Bosch washer working fine but not draining ONLY when on drying cycle

If it not the pump. Just a thought! Is this the Bosch washer dryer that is made in China ( PRC ) like the Siemens version so about 3 years old? Have had one once when the dryer inlet valve does not shut off when the machine finshes on the drying cycle BUT DOES eventually shut off after about 10 mins, drip, 5secs, then drip again ect…. The valves are not cheap to buy ( though they really should be ) so you might want to prove this first by being around at the end of the drying cycle and turn the tap off and then immediately take your stuff out to try to prove the point. I got in a hell of a mess trying to sort the wretched one I had to repair until it occured to me because inlet valves do not normally screw-up in that fashion, usually they just drip feed into the machine forever until you turn the tap off.. If you do prove this be wary of the new replacement valve`s longlivity as my customer found out the hard way when the pox ridden new valve filled up the machine during the night on day 2 for no apparent reason and she got somewhat moist the following morning, every new valve should really be sold with a free snorkel!……horrible contraption ( though not as bad as their dishwashers )…..never worked on one again as I refuse to.