On most electronic appliances these days and computers as well, if you press and hold the start button and count to 10 that might trigger a reset of the memory and clear it and the machine may work properly. Also unplug the appliance for 10 minutes, and also press button "Start" down for 10 sec. while machine is unplugged. Electronic appliances store a small amount of power in a tiny cell so that electronics retain the program to operate. That's why electronics that sit for years will not work, the cell died and the memory went bad.
Also try holding down other buttons one at a time as well as counting to 10. Look around on machine bottom etc. for a tiny hole that says "Reset", take a ball point pen and press it and hold down 5 sec. Your problem may have been caused by a power outage while machine was on, and this corrupted the program, it just needs to be reset. Or just remove pan and start and let machine run through the entire cycle, like a washing machine when it gets unplugged or outage while in cycle. You have to blow out the memory chip of the corrupted data, and it will reset automatically.
Last effort, have an electrician open up machine and check for a bad "inline fuse" and ask him to look for a reset button on circuit board inside unit as well, and to test the system battery storage unit, a small battery. It all takes about 5 minutes, he just puts a little tester on it. ... View related article.
