Same problem here. It does not start in 50% occasions after power outage, showing E104 or E105 randomly. We have several outages per day (I'm in Ukraine), so it is really annoying. I have to restart the unit manually to make it work again. I think it all started after the fan bearings were completely stuck couple years ago. We had to replace them and the unit was working fine since then, except for the occasional startup error.
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