This is a electronic controlled furnace and the motor speed can be changed by changing the wires on the IC board. My problem is i don,t know witch wires to move and to where. Some furnaces do this automaticly
2006-11-02 09:53:31 · 8 answers · asked by Stan 2 in Home & Garden ➔ Maintenance & Repairs
Some furnaces are varible speed and they do change speeds automatically. If you furnace isn't, then that means you have 3 or 4 wires that you can switch around on the board to change the speeds. Usually the Black wire from the blower motor is the "High Speed" and is used for the air conditioner. There should be a Blue wire that is "Med-High" and is used for the heat. There is also a yellow wire that is "Med-Low" and a red wire that is "Low" If you can find there wires, trace them back to the board and then switch them accordingly. If you do have air conditioning though leave the black wire to run the high speed. Make sure you turn the power off to the furnace before you mess with it even though it has a "kill switch" on it. Better to be safe than sorry. :)
2006-11-02 11:17:22 · answer #1 · answered by Doug H 2 · 0⤊ 0⤋
Are you sure you have a multi speed motor.?The colrs of the wires correspond to speeds but I can't see it from here.Look for the wiring diagram on furnace.If you change the speed you should then check the temperature rise with a thermometer.Subttract return(inlet) temp from supply(outlet) temp,range is printed on furnace.If you do no t get a satisfactory result call a tech.
2006-11-03 09:31:17 · answer #2 · answered by Scott EThe anode rod inyour hwh 2 · 0⤊ 0⤋
first off...you probably should change fan speeds unless you know what you are doing. you will end up either freezing the A coil next summer or you will never be able to cool the house.
2006-11-02 11:07:46 · answer #3 · answered by hillbilly named Possum 5 · 0⤊ 0⤋
Speed tap diagram is on motor body.
2006-11-02 10:53:55 · answer #4 · answered by Dawg 4 · 0⤊ 0⤋
Unless you can get a schematic for the system I would leave it alone. If you burn up the board it will cost you a bunch
2006-11-02 10:06:14 · answer #5 · answered by Thomas S 6 · 0⤊ 0⤋
best to get the furnace guy into do it they know how and are responible if they mess up. if you mess up it will cost you and is it worth it?? i have heard of lots of people who tried and then had to pay even more to get it straightin up
2006-11-02 10:10:00 · answer #6 · answered by Anonymous · 0⤊ 0⤋
What kind is it?You should'nt be touching anything if your not sure what your messing with.
2006-11-02 12:18:12 · answer #7 · answered by dccuttie75 6 · 0⤊ 0⤋
give us the make and model and we'll tell you how to do it :)
2006-11-02 10:03:35 · answer #8 · answered by Specialist Ed :Þ 3 · 0⤊ 0⤋