Does the heater light come on as soon as you switch on, before you press the Start button, does it stay on during the short reverse tumble ? I have changed a few modules on these with relay faults that keep the heater on all the time, it should switch off in reverse.
Jim.
I have one of these today doing the same thing. I can’t find anything wrong apart from a bulge in the side of the capacitor. The machine seems to have plenty of starting torque but the capacitor may be breaking down when hot.
I have replaced the capacitor and left the customer to put it though a few vigorous tests,