I contacted airconditioning repair people who came out, had a look at the evap cooling for 5-10 mins, and said the main PCB board needed replacing.
I then contacted someone who does repairs (over the phone, he didn't charge me) who advised me to try re-pairing the remote. That took a whole 5 minutes and it ended up working again. The tradie even sent me a pic of the PCB board with no lights saying it just wasn't working. He then gave me a quote to replace it and a $200 invoice for that callout.
What would you do in this situation?
Thanks
Edit: Thanks everyone for your input, it's been a fun and surprising discussion. I will call the guys and see what they have to say and take it from there. If paying $200 gives me the right to leave a review, maybe I'd rather do that.
@SlickMick: I've been in the other guys shoes- running teams of IT guys that charged (quite a lot) by the hour.
If it ever turned out that someone on our teams totally messed up and wasted a load of time, we would cut the amount of time we billed for, or we would just scrap the bill. Thankfully, the guys were generally competent and this was very rare.
Screwups were on us, we would not penalise the client for it.
Another difference is that we didn't go out of our way to lie to clients about what the problems were. Though it was oddly satisfying to report that the root cause things like "fileserver running out of space" was due to "hundreds of gigs of downloaded porn."
I am amazed at how many people in this thread think that it's okay to be actively lied to, and then pay for the privilege of being fed documented BS.