but I hope someone can.
It's a Rheem RHPN-HM2421JC A/H with electric heat, installed vertical in a closet.
The cond unit is a RARL-024JEZ two stage.
Thermostat is a Rheem TST305.
T-Stat is configured for two stage cooling, and no daily program.
The customer says it runs fine all day but stops cooling somewhere between 2am and 5am. He says he looks out the window and can see the cond fan running and hears the compressor, and reach his hand to a grille nearby and it's blowing warm air.
Then around 6am it's cooling fine again. It happens every night.
There is no power company call box that would shut it off.
I have checked everything, I won't even bother to list it all because of the specific time that it blows warm air. It obviously works when I'm there.
We can have a 95 degree day and it works fine all day, but had this problem the night before and the next night.
The board in the cond unit reads no codes.
The guy is in his 80's or close to it I would guess.
What do you think?