AboutBill Brainard Expertise I can solve most heating related problems with furnaces and air conditioners(natural gas,propane, electric)(no oil or heat pumps) & some boilers and most control problems. Iam a heating & air cond contractor with 30 some years behind me. I spent 12 years working for Sears doing this type of work.
Experience I have graduated from 10 or 12 factory schools on gas furnaces ( 70%, 80%, 90%+ AFUE), basic air conditioning, air conditioning service, advanced air conditioning, oil furnaces, wall furnaces, floor furnaces, air handlers, coils, compressors, multi-speed (1 speed to 12 speed) furnaces, mobile home furnaces and air conditioners etc...
Question Replaced an old t-stat recently with a new programmable t-stat (ritetemp model 6025). Initially had issues because person who installed or "jury rigged" the AC before us had used a non standardized color coding system on the wires.
Finally all was well. AC turns on fine but fan switch has to be on the ON position or no air blows through the vents. Turn on COOL and put fan on ON and everything seems to work fine. T-stat reaches target temperature and AC turns off but fan keeps going pulling in "hot" outside air (atleast I think it's outside air). Only way to turn off the fan is to put the fan switch to AUTO.
If AC is turned on to COOL and fan switch on AUTO, you can hear AC kick on but no air. (did i say this already?)
You can put the AC switch to OFF and leave fan switch to ON and fan keeps blowing warm air.
I have a Goodman AC model # PH036-1A and wires I've connected to T-stat are as follows:
Y on stat to Y on AC (yellow wire)
Rh bridged Rc to R on AC (red wire)
O on stat to O on AC (white even though it should be orange?)
G on stat to G on AC (green wire)
C on stat to C on AC (blue wire)
What did I do wrong?
By the way I live in hot hot Arizona so I don't really care for any heat.
Answer What do you mean "On A/C"? The hook ups belong inside the furnace. The Red wire looks wrong. Here is standard hookups. Red at furnace to T-stat (any color, usually red) Hooks to Rh and jumps to Rc. peroid. White from furnace to white at T-stat. Green at furnace to green at T-stat, Yellow in furnace to yellow in T-stat. and the yellow in the furnace connects to one of the wires going out to the A/C unit. The othre wire from the A/C unit connects to the "common" in the furnace (usually blue). . . . . . . . . The blue in the T-stat should not be hooked up, make sure the Red is hooked up right. From what you say it is not. It only hooks to Red at the T-stat (and jumpered to Rc). Hope this does not confuse. Good luck.
