I bought a new rth2300 to replace the old one... The ac works but the heater won't. [Archive]

View Full Version : I bought a new rth2300 to replace the old one... The ac works but the heater won't.

spark5270

Oct 25, 2011, 07:28 PM

I bought a new rth2300 to replace the old one.. The a.c. Works fine except the heater...
Please help. I have only four wires yellow red black and white I followed the instructions but only the a.c. Works.. please help..