Early New Waves
Apparently the early models had a problem with excessive sparking from the motor brushes, which upset the electronics, causing the abort sequence.
The abort sequence could be activated by other factors, such as: 'time-out on heating', 'suds-lock', 'fill failure', 'motor tacho pulses missing' and maybe a few others.
The New Wave Plus 5, 1500rpm had a "new spin combination"; something like 2.5mins at 800rpm, then 2.5 at 1500rpm, as opposed to 4.5mins at 800rpm and 1.5mins at 1300 as our machine did.
With the 1300 model we had, by pressing a couple of buttons and applying the power, you could activate the test mode, enter the spin test, and get it to spin at full tilt for almost 6 minutes!