Derelict Device

Winter is getting stronger. Temperature is falling. Seventeen degrees below zero outside. But only plus seventeen inside.  Strange, best to check the little device that controls all the radiators. Strange again, a not so very pleasant smell of burnt plastics. And a bit of soot above the control device.  No good.  Wonder if my friend Håkan the electrician is available.  He was and the temperature is rising.  Inside.