All electrical components that are csa approved should be more than capable to operate properly during any heat wave. The outside ambient temperature has crap to do with a sensor not functioning. I doubt it is 100�+ in the hoistway or machine room, and if it is, buy air conditioning for it. Now if this home lift has some type of tape selector with magnets... they could possibly come "ungled." But that's very doubtful since it started working again normally without making any adjustments or repair. If it moved at all (6") you can be assured the safety circuit was good. I'd be checking that upper floor door lock since the lock cam was probably opening it at the 6" point. Good luck.
