I'm with you Dave. I'm in northern Michigan. It was in upper 90's until last weekend. It hasn't gone over 55 or so (45 at night) since last Wednesday. I turned on my heat yesterday because it was 63 in the house, and my wife was complaining.
Good news is it's back in the 60's tomorrow, and will...
What are the symptoms? Does it turn on? My Panasonic worked normally, except no heating. So I checked the magnetron, there are videos that show you how, it was bad.
5 minute repair.
I threw mine out about 20 years ago. Not only does the oil go bad, but I had to use it out on the deck, or the house would stink for days. Then there is the health issues.
I can get just as good from the oven. Especially when I buy the frozen "Checkers" fries.
The TC5 will not fill with the lid open either. Never understood the big deal, if I want to add something, I can, it just pauses the fill for a couple seconds.
The model you got has a three year parts warranty, NO labor. Not sure where the 90 days came from. The TC5 has 5 years parts and labor...
69 during the day, I change it to 68 when it gets dark, until morning. 2016 13 seer Trane system.
Most important thing is air sealing and insulation. Today was 89 degrees out, the air didn't come on until 4:30 pm. It's ran about 4 times for an hour or so. It usually only runs once at night...
I use these on my house:
https://dryerwallvent.com/
Don't clog up like the plastic screens, closes with a magnet, and mice can't chew through the plastic.
This is why my local Speed Queen dealer will not sell or install these in residential settings. There is no labor warranty, just 3 years parts. Maybe that's why they want a service call charge?
Sorry you are having these issues only three months in.
I got a Speed Queen TC5. Delivered, installed, free hose extension, and free haul away last year form the local dealer for $1150, The TR5 was offered at $1050. Both have 5 year warranty's. And THEY service what they sell, not some contractor.
I'd check out a local dealer before shopping at HD...