Well, it happened again.
The furnace broke down, again.
That was an hour and a half ago.
Lares is here, fixing a different part that broke down, the fan motor. Attila called Lares, after spending time trying all the things he knew to try. Lares came over straight away, needed different parts, phoned around, found them, went to pick them up, and is doing the install now.
Luckily the temperature is still relatively close to freezing, -4C, so that the house is not terribly cold, even though the furnace has been out of commission for an hour and a half. Later tonight the temperature is supposed to drop to -16C, so I am very grateful that Lares made time during his evening off to trek over here and fix our furnace!
As I am writing the furnace started up and it is working!!