I have a 10 year old Fisher & Paykel GWL10 washing machine. Fault code 1 is coming up. The machine turns completely off. The longer it cools down, the longer it goes before turning off again. This can happen anywhere during the cycle. Thank you.

Code 1 - usually means on the later models of Fisher & Paykel is a faulty Motor Control Module, often though one would have to replace both as well as the display module.

Anyway - it sounds like the electronics are overheating hence the intermittent problems you are experiencing.