Re: Indesit IDF125 not washing properly
Mystery solved. The pump impeller had come loose from the motor spindle.
I took the pump out and checked it for blockages and performed an electrical continuity test on the coil windings and the heater circuit, which of course checked out OK. I didn’t check the capacitor because I would have had to break and remake the solder connections. I even turned the impeller by hand and found that it turned freely.
By this point I had run out of ideas (apart from the capacitor that I couldn’t test) and called in an engineer who eventually determined that the impeller was no longer attached to the motor spindle. The clue was that it spun freely without being flicked on my the magnetic field — it moved too smoothly!
This is a sneaky mechanical fault that DIYers like me might not spot.