fast program on dry is usually wire broken off the condenser bottom sensor.take back of and looking in from the back on the left side is a condenser.follow that down and llok for sensor with view to it having wiring broken off.make good wiring if faulty and retest
CK
October 2013
I can answer this question...
how do i fix my washer/dryer, zanussi essential 1600, zwd16270w1?