problems with brand new unit < 48 hours after installation

Hey all, we live in Nashville, TN and our 18 year old upstairs unit died Thursday night (fan motor, leaking refrigerant, cap issues, the whole works) We decided on replacing it completely with a new Rheem 2.5T 15 SEER heat pump from a reputable local company. Techs came out on Saturday, installed and out the door in about 7-8 hours.

Everything working fine until Monday morning the wife noticed it was warm upstairs and the tstat was dead. I was out fishing, but took a look when I go back. Here's basically what I've done to diagnose the issue (and I'm on a damn waiting list for a tech to come out...maybe today they said. Got my money already so no rush to help us out, but that's a different problem):

• flipped disconnect to air handler and disconnect to outdoor unit (no change)
• pulled tstat from housing and put it back (no change)
• checked voltage on tstat wiring, no readings at all
• checked main breaker to air handler (reading ~240)
• checked main breaker to outdoor unit (reading ~240)
• discovered air handler has its own breaker/disconnect that pokes out from top of service panel. It's supposed to have a red light illuminated when on and it was not lit.
• Flipped breaker, no change.
• Pulled service panel and checked breaker (input side reading 240, output side when on reading 0)
• Looked for a fuse housing on the board or inline, but didn't find one?

So I have a dead 60A breaker it would appear and from my Googling I've discovered this is not a standard 60A breaker I can go pick up at HD or Lowes smh. I'm not sure if there's a separate kill switch that would cause zero power through that breaker when flipped on...I was told by the tech that they installed a water sensor that would kill the unit if triggered and there's a big red sticker on the air handler stating such, but I do not see a water sensor in the pan so maybe it's underneath the handler inside the housing? The pan that surrounds the handler does have moisture build up in it, but not much but noticeably wet.

I have no clue if the water sensor and breaker work together such that if sensor kicks the breaker will refuse to come on? I can't tell from the wiring, but I guess it's possible?

submitted by /u/dynamofoo
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