When returning from Port Pirie on Friday Heather wanted me to stop so she could get some rabbit food and rather than stop the motor I let it idle for the 10 minute wait.
I noticed the temp gauge in the red where normally the fan would keep it at just over half of the normal range. Once underway the temp slowly went down to normal which proved that at least the water pump was still working and there was still some coolant left.
We went to Adelaide in May and with the stop/start traffic I had no issues with temp and until yesterday haven't idled the motor when it's hot for more than a minute or two so not long enough to notice any issues.
Three possible fixes; fuse, thermo switch or fan. Haven't looked at the bike yet and I have a ride to Port Augusta on Monday morning and then I'm off to Perth on Thursday so I'll have to check it out when I get back.