Heating & Air Conditioning failed while in neighbor visit

My associate and I tried to tinker around with the heating unit, however the heating system did not kick back into gear

I don’t know why things always go wrong for me at the worst possible time. It seems like whenever there is a lot of pressure on a certain situation, it’s guaranteed that something ridiculous will go wrong at the worst moment, for example, my automobile will randomly chop down as I hurry off to a task interview, someone will dump coffee all over my shirt as I’m walking to an important meeting, or my computer will crash right as I finish up a major project. I don’t know why I’m so cursed, however I’ve learned to always expect the worst. This past month I experienced yet another unblessed turn of fate when my friends came to visit plus my entire Heating & Air Conditioning system broke down. It was unseasonably chilly while in their trip plus my associate and I had the heating system engaged for the first time all year. There was warm, dry air consistently flowing through every air vent as my associate and I lounged around, comfortably chatting, when all of a abrupt I heard a large banging sound emerge from the basement. Suddenly the air felt much cooler, plus I realized something had absolutely changed. I went to the temperature control plus saw that the heating system was now offline plus could not reaffix to the temperature control unit. My associate and I tried to tinker around with the heating unit, however the heating system did not kick back into gear. Finally, as our toes continued to freeze plus our guests shivered in their seats, my associate and I resorted to pulling out all the electric space heaters my associate and I had stockpiled for a temporary resolution.
Ductless heat pump