Your video helped me to make my furnace finally work properly. Thanks! I still preferred the radiator heating system over this noise and fuel sucker dust blower cheap to build forced air system! I live in north Canada and 6 mount winter. I had before radiators in my old home, amazing, room temperature was as I desired and much much more cheaper on gas! Quiet too.
Several of the mobile home furnace motors utilize Orange as the common wire color also. Yes, no hiding once you have let the smoke out of one,lol. Great video. Take care, Brett.
Great video, I believe most speeds are just fine. But some advantage may come from not stopping the blower. The blower uses very little energy when it is running, Most of the energy is used to start it spinning. So let the blower run at a slower speed. When the blower is running it will keep a more constant/even temp in all areas of the home. Something else in your car let the blower run on high adjust the temp control. This will keep people in the back happy and keep moisture off all the inside windows.
This type of motor is somewhat different. Its starting amp draw is generally about 1.5 times the running amp draw unless its an ECM which draws no more than running amps. GFM
I am working on a tenant complaint about AC cooling not being good enough. This is for a an upstairs duplex apartment unit. The evap is getting nice and cold-maybe too cold. I think the fan speed for the cool is too low. Right now the cool for the motor is on the BLUE (Med-Low). And the heat is on YELOW (Med-High). I alway heard that the cool speed should generally be faster than the heat speed, so Im going to switch the two so the cool is Med-High and the heat is Med-Low. Will this help solve my cooling issue?
How about if the fan speed is too high on AC? Looks like my unit is blowing so hard the condensate stays in the fins instead of falling into the catch trays and this is causing high humidity (66%) and cool Temps(67f) in our basement even though at its only 65% outside at 80f. Our system always seemed fast but as it's gotten older this seems to be a bigger issue. The basement used to be a steadyish 49-55% in this type of weather.
@@grayfurnaceman The coil looks a tad dusty but not dirty. Had two different companies here to look at the problem and neither had any real ideas on what was going on with the water at tines dripping onto my heat exchanger while the fan is running. It just looks when I watch it that the water is staying up on the fins and not running down to the points to the tray.
Had a York 90 had a issue not able to heat house too set temp.They turned up the fan speed ,on a 10 year old unit that fixed the issue .wonder how it worked tell then ?
The way to check which one is for lower or higher speed is to ohm common (white) to each color one. Fewer ohms equals higher speed (fewer polls - less windings)
say i have an amana gux model and it has the rf000129 controller on it. at my girls house and the blower motor runs to fast. i want to slow it down. so what are the park terminals for on this controller? i'm thinking they are just a place to hold the extra wires. so can i swap the wire that is on the power terminal with one of the wires on the park terminal? just swap them. not the common wire. now it has white and black on the power terminals. i can't meter them as when i open the door and fake out the door switch it gets to much aire and turns off the furnace. this furnace came out of a large home and i put it into a smaller home and the heat feels cool out of the vents so i think the fast speed is cooling the heated air some. i slowed down my home furnace and it heats much better now. i went form 1050 to 950 and it is way better. so i would like to try this for m girls furnace. thanks
@@grayfurnaceman thanks. i asked the hvac forum and all they wanted me to do was make tests before changing the speed. this unit came from a larger house that i put it in so i figure i can lower the speed at least on wire slower. and if it bumps the hi limit i can put it back. but what i get is the hot air from the registers seem a bit cooler than what i get form my house and i lowered the speed on my furnace and it works great now. again thanks for this video.
To run high-fire heat and air-conditioning at the same blower speed, can a short Y-cable (with terminals on all ends of the Y) be used to allow the Hi-Heat and Cool terminals on the circuit board to both connect to a single motor tap wire? Or will this cause a problem because it will bridge the high-fire heat and the air-conditioning terminals? (This is on a Carrier high condensing furnace with multiple motor speed taps. It just so happens that the optimal speed in this situation happens to be the same for both heating and cooling.)
We have always wanted to turn on just our fan. I just looked at our wiring and just the w and rh wiress were connected. I then connected the g wire and tried to turn on just that fan and nothing happened. What am I missing?
you are missing the controller function from your relay with the 24 volt which would be your thermostat control. something this guy never shows for some reason.
Q: The air flow speed on my new Coleman is insanely higher pressure and the sound gets on my nerves. Considering the old furnace's slower fan worked just fine to heat the house evenly and quietly, is there any harm to the newer furnace lowering the fan speed by one setting? I assume it must be OK if it's on there... not going to burn up a heat exchanger or anything. I think the house ducts are already set up for a lower pressure setting because now the ducts are thumping (oil canning) when the air shuts off - too much air forcing them!! Thanks.
Does that mean it is not possible to use the same speeds for heat and cool mode ? Also, is the speed used on the "cool" terminal the same speed used for fan only ?
You can jumper the heat and cool terminals and just use the same speed for both. The unused fan speed must be isolated. Fan only is usually the lowest speed. It is usually only energized when there is a call for fan with no call for cooling or heat. GFM
high speeds for cooling and heating.... when you first start your furnace ,,, depending on your model,,, you would have a small fan that or blower start with small speed to get rid of any gas or carbon monoxide ..... your igniter then kicks in and starts and your flame comes on... once the temperature reaches a specific degree on your limit controller the high fan is activated and heats your home in no time....
Do you know why the keeprite furnace has different color blower wires? I just checked mine because the fan seems to be running on the slowest speed, and I found out they wired the fkn thing completely wrong compared to what the diagram is saying it should be for normal installs... I called them to come fix this and I am not paying for their errors either, this furnace was bought in 2012 and the wife always complained about how weak the air coming out of the registers is.. I have pictures of their wiring and the diagram I wish I could email you..
How do you connect the low fan speed for dehumidification to a thermostat such as the Honeywell Prestige. In other words how to you get the fan to go from high speed to low speed to lower the humidity (feature on the thermostat). The a wire from the Prestige (u1,2,3) activates this. You use a potential relay right? How do you wire it to prevent power from going to both wires?
billybassman21 Most newer unit have a feature on the IFC furnace controls that allows the fan to go to low speed if only G is energized. If G and Y are energized, it goes to high speed. So the air conditioner works ok. Hope this helps. GFM
yes, it can be done, but the reason black is on cool is because black is your highest motor speed line, and it is necessary to push the heavier cold air. Hot air is easier to push than is cold wet heavy air, so keep the black powerful line on cold and the next most powerful line on heat, but yes, they can be switched, but it is not a good idea.
how is this possible... he never explains anything fully. not wiring, not how is connected to the relay and transformer... Just logic of how it would work not how it actually works...
When and why should you change the speeds? Let's say I have my blower on MEDIUM HIGH when or why should I change it to High? and If you do change it from a lower speed to a higher speed is it going to affect the duct in any way?
SombraLocs Because the furnace is used with ductwork that the manufacturer can't control, you are given several speeds to adapt the furnace to the ductwork. Higher speeds will generally give a more even temperature in the structure because the air is changed more often. It will also make more noise. GFM
You can. If you have air conditioning, the flow will be reduced when running the air conditioner. Be sure you only change the speed wires. If you make a mistake, you will take out the motor. GFM
how to chose which speed for cooling and wich one for stage one and two heating, i have GMH8 Goodman furnace 100 btu 80% and 3 ton AC unit this is the link to the manual of the furnace: www.goodmanmfg.com/pdfviewer.aspx?pdfurl=docs/librariesprovider6/default-document-library/ss-gmh80e4c2b0022fa6258827eff0600754798.pdf?sfvrsn=d3b649c0_0?view=true
Thank you for a video. One question I would like to ask. We used to have Lennox furnace/ac and it was quite, worked for 18 yesrs. AC went, so we had to replace furnace and ac. We have got American Standard, Silver Series, AUH1B060A9H31B installed. When the installers turned it on and was so audible, sounded like the fan running around the house. We reduced the speed to low and it became as quite as it used to be, a little bit louder, but that is ok. In this video you are saying that the higher the fan speed is the better. Is it really bad that we reduced the speed of the fan? I would hate it to be that loud. Also, what are the best filters to use in these new furnaces/ac's? We used to use 3M 1200-1500. Quite confused. Your advise would be highly appreciated.
Thank you Sam. I will try next speed and see if we can cope with the noise. I tried fiber filters, no difference. Also, I noticed when I use any of these filters the temps are the same. So I'd rather have the filter that removes particle. If you can make the video on filters it would be great. I tried to find info, but most of the time all the information is provided either filter manufactures or companies that sell/rent furnaces/ac's. I am not sure I would trust their opinion.
Your video helped me to make my furnace finally work properly. Thanks! I still preferred the radiator heating system over this noise and fuel sucker dust blower cheap to build forced air system! I live in north Canada and 6 mount winter. I had before radiators in my old home, amazing, room temperature was as I desired and much much more cheaper on gas! Quiet too.
A better video that needs more likes. Simplest discussion. Purple is true medium
Several of the mobile home furnace motors utilize Orange as the common wire color also. Yes, no hiding once you have let the smoke out of one,lol. Great video. Take care, Brett.
Great video, I believe most speeds are just fine. But some advantage may come from not stopping the blower. The blower uses very little energy when it is running, Most of the energy is used to start it spinning. So let the blower run at a slower speed. When the blower is running it will keep a more constant/even temp in all areas of the home. Something else in your car let the blower run on high adjust the temp control. This will keep people in the back happy and keep moisture off all the inside windows.
This type of motor is somewhat different. Its starting amp draw is generally about 1.5 times the running amp draw unless its an ECM which draws no more than running amps.
GFM
I am working on a tenant complaint about AC cooling not being good enough. This is for a an upstairs duplex apartment unit. The evap is getting nice and cold-maybe too cold. I think the fan speed for the cool is too low. Right now the cool for the motor is on the BLUE (Med-Low). And the heat is on YELOW (Med-High). I alway heard that the cool speed should generally be faster than the heat speed, so Im going to switch the two so the cool is Med-High and the heat is Med-Low. Will this help solve my cooling issue?
It certainly could. I would be checking the filter, blower wheel for dirt and AC coil for blockage. You also could go to the high speed.
GFM
How about if the fan speed is too high on AC? Looks like my unit is blowing so hard the condensate stays in the fins instead of falling into the catch trays and this is causing high humidity (66%) and cool Temps(67f) in our basement even though at its only 65% outside at 80f. Our system always seemed fast but as it's gotten older this seems to be a bigger issue. The basement used to be a steadyish 49-55% in this type of weather.
The first thing I would look at is if the coil is dirty.
GFM
@@grayfurnaceman The coil looks a tad dusty but not dirty. Had two different companies here to look at the problem and neither had any real ideas on what was going on with the water at tines dripping onto my heat exchanger while the fan is running. It just looks when I watch it that the water is staying up on the fins and not running down to the points to the tray.
Had a York 90 had a issue not able to heat house too set temp.They turned up the fan speed ,on a 10 year old unit that fixed the issue .wonder how it worked tell then ?
I would guess the AC coil, the secondary heat exchanger coil or the blower wheel is dirty.
GFM
The way to check which one is for lower or higher speed is to ohm common (white) to each color one. Fewer ohms equals higher speed (fewer polls - less windings)
say i have an amana gux model and it has the rf000129 controller on it. at my girls house and the blower motor runs to fast. i want to slow it down. so what are the park terminals for on this controller? i'm thinking they are just a place to hold the extra wires. so can i swap the wire that is on the power terminal with one of the wires on the park terminal? just swap them. not the common wire. now it has white and black on the power terminals. i can't meter them as when i open the door and fake out the door switch it gets to much aire and turns off the furnace. this furnace came out of a large home and i put it into a smaller home and the heat feels cool out of the vents so i think the fast speed is cooling the heated air some. i slowed down my home furnace and it heats much better now. i went form 1050 to 950 and it is way better. so i would like to try this for m girls furnace. thanks
The park terminals are not connected to anything. You can switch them out. Just leave the common alone.
GFM
@@grayfurnaceman thanks. i asked the hvac forum and all they wanted me to do was make tests before changing the speed. this unit came from a larger house that i put it in so i figure i can lower the speed at least on wire slower. and if it bumps the hi limit i can put it back. but what i get is the hot air from the registers seem a bit cooler than what i get form my house and i lowered the speed on my furnace and it works great now. again thanks for this video.
To run high-fire heat and air-conditioning at the same blower speed, can a short Y-cable (with terminals on all ends of the Y) be used to allow the Hi-Heat and Cool terminals on the circuit board to both connect to a single motor tap wire? Or will this cause a problem because it will bridge the high-fire heat and the air-conditioning terminals? (This is on a Carrier high condensing furnace with multiple motor speed taps. It just so happens that the optimal speed in this situation happens to be the same for both heating and cooling.)
If the motor is a PSC, it should work ok.
GFM
@@grayfurnaceman It's an ECM motor. Based on your reply, I guess that means that it's not okay to use the Y-cable.
I'm just not sure of the results as I have never tried it.
GFM
@@grayfurnaceman Thanks Gary.
We have always wanted to turn on just our fan. I just looked at our wiring and just the w and rh wiress were connected. I then connected the g wire and tried to turn on just that fan and nothing happened. What am I missing?
you are missing the controller function from your relay with the 24 volt which would be your thermostat control. something this guy never shows for some reason.
please explain the relays function meaning which relay is for what purpose ???
If you mean the relays on the control board, One is for the fan motor, one is for the inducer.
GFM
it is okay to change the speed on the cooling side???
If you are lowering it, careful. You could get coil freeze up.
GFM
Q: The air flow speed on my new Coleman is insanely higher pressure and the sound gets on my nerves. Considering the old furnace's slower fan worked just fine to heat the house evenly and quietly, is there any harm to the newer furnace lowering the fan speed by one setting? I assume it must be OK if it's on there... not going to burn up a heat exchanger or anything.
I think the house ducts are already set up for a lower pressure setting because now the ducts are thumping (oil canning) when the air shuts off - too much air forcing them!! Thanks.
Good point. Thanks for the comment. Merry Christmas
GFM
Does that mean it is not possible to use the same speeds for heat and cool mode ? Also, is the speed used on the "cool" terminal the same speed used for fan only ?
You can jumper the heat and cool terminals and just use the same speed for both. The unused fan speed must be isolated.
Fan only is usually the lowest speed. It is usually only energized when there is a call for fan with no call for cooling or heat.
GFM
high speeds for cooling and heating.... when you first start your furnace ,,, depending on your model,,, you would have a small fan that or blower start with small speed to get rid of any gas or carbon monoxide ..... your igniter then kicks in and starts and your flame comes on... once the temperature reaches a specific degree on your limit controller the high fan is activated and heats your home in no time....
The trane furnace has blue as med - high and yellow as med - low. Opposite what you have.
Do you know why the keeprite furnace has different color blower wires? I just checked mine because the fan seems to be running on the slowest speed, and I found out they wired the fkn thing completely wrong compared to what the diagram is saying it should be for normal installs... I called them to come fix this and I am not paying for their errors either, this furnace was bought in 2012 and the wife always complained about how weak the air coming out of the registers is..
I have pictures of their wiring and the diagram I wish I could email you..
Send the pics to Grayfurnaceman@gmail.com
GFM
great video, keep them comming, thanks
How do you connect the low fan speed for dehumidification to a thermostat such as the Honeywell Prestige. In other words how to you get the fan to go from high speed to low speed to lower the humidity (feature on the thermostat). The a wire from the Prestige (u1,2,3) activates this. You use a potential relay right? How do you wire it to prevent power from going to both wires?
billybassman21 Most newer unit have a feature on the IFC furnace controls that allows the fan to go to low speed if only G is energized. If G and Y are energized, it goes to high speed. So the air conditioner works ok. Hope this helps.
GFM
You gotta love these guys,lol.
GFM
love this guy
Can I switch heat and cool? The black is on cool and the blue is on heat Can I plug the black on heat and plug the blue on cool? please reply someone
Yes you can.
Bad idea. Unit Ac is charged (freon )to black high speed.
yes, it can be done, but the reason black is on cool is because black is your highest motor speed line, and it is necessary to push the heavier cold air. Hot air is easier to push than is cold wet heavy air, so keep the black powerful line on cold and the next most powerful line on heat, but yes, they can be switched, but it is not a good idea.
excellent tutorial! ;-)
how is this possible... he never explains anything fully. not wiring, not how is connected to the relay and transformer... Just logic of how it would work not how it actually works...
When and why should you change the speeds? Let's say I have my blower on MEDIUM HIGH when or why should I change it to High? and If you do change it from a lower speed to a higher speed is it going to affect the duct in any way?
SombraLocs Because the furnace is used with ductwork that the manufacturer can't control, you are given several speeds to adapt the furnace to the ductwork. Higher speeds will generally give a more even temperature in the structure because the air is changed more often. It will also make more noise.
GFM
grayfurnaceman so if I set my blower to a higher speed, I would need to re design my ductwork to cut off the noise?
SombraLocs Yes, you may need to.
GFM
can I just switch the heat to the Cool
You can. If you have air conditioning, the flow will be reduced when running the air conditioner. Be sure you only change the speed wires. If you make a mistake, you will take out the motor.
GFM
how to chose which speed for cooling and wich one for stage one and two heating, i have GMH8 Goodman furnace 100 btu 80% and 3 ton AC unit
this is the link to the manual of the furnace:
www.goodmanmfg.com/pdfviewer.aspx?pdfurl=docs/librariesprovider6/default-document-library/ss-gmh80e4c2b0022fa6258827eff0600754798.pdf?sfvrsn=d3b649c0_0?view=true
As a general rule, The low speed is for 1st stage, medium for 2d stage, and the high speed is for cooling.
GFM
Thank you for a video. One question I would like to ask. We used to have Lennox furnace/ac and it was quite, worked for 18 yesrs. AC went, so we had to replace furnace and ac. We have got American Standard, Silver Series, AUH1B060A9H31B installed. When the installers turned it on and was so audible, sounded like the fan running around the house. We reduced the speed to low and it became as quite as it used to be, a little bit louder, but that is ok. In this video you are saying that the higher the fan speed is the better. Is it really bad that we reduced the speed of the fan? I would hate it to be that loud. Also, what are the best filters to use in these new furnaces/ac's? We used to use 3M 1200-1500. Quite confused. Your advise would be highly appreciated.
Thank you Sam. I will try next speed and see if we can cope with the noise. I tried fiber filters, no difference. Also, I noticed when I use any of these filters the temps are the same. So I'd rather have the filter that removes particle.
If you can make the video on filters it would be great. I tried to find info, but most of the time all the information is provided either filter manufactures or companies that sell/rent furnaces/ac's. I am not sure I would trust their opinion.
cool
Westinghouse uses purple
Us color blind guys mistake it for blue and burn up the motor.
GFM
Thank you for sharing, this is my story with furnace maintenance:
ruclips.net/video/dZl6oyjzcMw/видео.html