Question about Carrier 38BRC036 Air Conditioner
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Posted on Jan 02, 2017
most time, you don't have to do anything because the default setting for wiring with fan speed already. if not, trace the motor wires from motor with red , white and black from motor fan to PL2 and PL1. the best is look at a diagram from your actual furnace.
Posted on Nov 09, 2008
If it sounds like a scraping noise it could be the motor bracket ah broken and the squirrel cage (fan assembly) is hitting the fan housing, if it is more of a squeal than it very well could be a bearing. Very hard to guess without seeing or hearing it.
Posted on Nov 02, 2009
Ok first thing is it sounds like a wiring problem. So first step is to make sure the thermostat is properly connected. Which... the main thing here is there needs to be 24v dc power coming from your control board (transformer) going to the thermostat..generally that is the red wire. All the thermostat does is connect that "red" wire (power) to one of the other wires to complete a circuit. So make sure you have 24 volts... (generally about .5amps) . if you have power than switch thermostat to fan only should energize the green wire only. then switch to ac and move temp low enough that the ac should turn on and that should energize the yellow wire. for sure one of those wires is incorrect now or the fan wouldn't be on OR THE THERMOSTAT IS NOT CONNECTING THEM AND IT IS BAD. Now about the compressor and fan.... those same wires run out to the compressor unit... ok the yellow for ac.. greeen does not go to compressor unit that is for fan only (vent).. red carries the same 24 volts... one difference here is that most carrier units only have the one transformer....so you run the red wire is the +pos 24 volt..and then a "common " wire is needed which is the Ground or neg... that wire on a carrier is brown usually but could be different depending installer. The orange wire goes to the pump reversing valve it is always energized when on ac mode...when heater is on in the winter it is heat pump and is not energized so just connect the orange and yellow together... tell me more specifics if this doesn't help and i'm sure I can help you... thanks Chuck
Posted on Jun 22, 2012
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