I Just had a new 75,000 BTU Rheem Classic 90 Plus Modulating gas furnace with the mod TST401MDMS thermo and humidifier, along with a Classic series 2 1/2 ton AC unit installed in a 1500 sq ft home by a Rheem dealer.
The fan was running at full speed when the heat was on, as well as when it wasn't. After a little research here, I discovered the wiring may not have been correct. The "w" was wired to W2, I changed it to W/E.
I also noticed the "G" from thermo was going to the Y/Y2 on the furnace, I switched this wire to the "G" on the furnace.
I hope everything else is hooked up properly, so I thought I would post a couple pics.
Another question, should the fan be set to operate in "auto" mode or "on"?
Also, I notice air blowing out (in a couple small areas) between the furnace and the "box" that sits on top of the furnace, enough to possibly blow out a candle. Is this normal?
Thanks in advance,