Look I expect you are interested in getting back into the swing of things & home brewing has developed in the last 10 years or so. Fundamentals remain the same of course.
My recommendations (BTW I disagree nothing anyone has posted in the replies).
1) Use the yeast that came with your kit, if there are temperature restrictions given, try to meet them.
2) Otherwise depending exactly where you are, your average day/night temperature probably needs to be between 20 & 24 C.(depending on yeast). You can blanket your fermenter with bath towels & place frozen 750 ml (thereabouts) bottles of water under to cool if necessary. This insulation will slow down temp changes which you should aim to restrict within a 2 C range (bit easier said than done). You could put your fermenter in a small room with an aircon unit if you have such a thing. You can also use bottles of hot tapwater to raise temp.
These methods work but they are a PITA.
3) If you decide to wait for your temp controller, the next question is where & what will it control if your fridge does not work?
4) Yeast is quite forgiving, especially kit yeast, don't panic if you end up not quite meeting the target temp ferment range.
Good luck