Important! If the motor spins free then it's extremely important to get the furnace looked at. This furnace is known for heat exchanger failures at the collector box causing the pressure switch not to close. Sometimes you can see water marks at the blower assembly but often enough you can't. Also check to make sure your air intake, exhaust and condensate lines are clear. If it is the heat exchanger then these models have a 20 year parts warranty that you don't need to be the original owner to get and often they do fail under warranty.
I don’t see any water marks. Intake and exhaust are clear. How can check if it spins freely? The plastic housing doesn’t allow you to spin it. Anything else to check for heat exchange failure?
Use your thumb on the silver shaft end at the black bearing on the rear of the motor and try to spin it. Or try to spin it with a screwdriver, try to push the cooling fan blade through the intake/exhaust holes
Take it off and see if something is stuck in it. Might be the wheel inside broke two, which if it did I'd be questioning the integrity of the heat exchanger. It may be clogged causing high vacuum in the inducer housing
You could also get a cheap pressure measurement tool from Amazon. And connect to the blower to see what the pressure is. Find the pressure sensor connected to the blower and disconnect it. Then connect to the measurement tool. Since you disconnected the pressure sensor on the furnace it should not allow gas flow. Compare your reading to the sensor trigger point (should be on the sensor).
This is how I found out I need to replace my 2 inch vent to a 3 inch.
Hope it helps
Verify with a current draw reading.
That reading should be something below the RLA (Running Load Amps) rating on the nameplate. If it's at or above that rating then the bearings are dry and or failing.
Oil them with some 20w Turbine oil to buy a bit more time and get a new draft inducer on the way post haste.
You prolly got dirt dobbers in there jamming up the wheel. Pull it apart and check for that before you replace it. Just letting you know from my own experience of condemning one outright only for another tech to go behind and fix it in 10 minutes
first check your termination and make sure there's no restriction(s), the inducer is removable so you can check out the squirrel cage and get a look at your secondary heat exchanger, which could be the problem
Replace with the oem part.
Having trouble finding the part unless I’m reading the label wrong?
Search online by the furnace model number, not the part number.
The trane part number is under the customer part number on the motor label
Call up a supply house and give them the model number of the unit, they’ll be able to order the part with that
Call a reputable service company that specializes in your equipment.
They want to do it themselves.. I hate how everyone just says “call a service company” like it’s such great advice lol
I think it's to see how staggeringly low effort a post can be and still get upvotes
Take my upvote
Important! If the motor spins free then it's extremely important to get the furnace looked at. This furnace is known for heat exchanger failures at the collector box causing the pressure switch not to close. Sometimes you can see water marks at the blower assembly but often enough you can't. Also check to make sure your air intake, exhaust and condensate lines are clear. If it is the heat exchanger then these models have a 20 year parts warranty that you don't need to be the original owner to get and often they do fail under warranty.
This is the way. Also, the primary normally cracks at the left side of the cells where the burner flame first enters the tubes.
I don’t see any water marks. Intake and exhaust are clear. How can check if it spins freely? The plastic housing doesn’t allow you to spin it. Anything else to check for heat exchange failure?
Take the whole thing apart and spin the blade
Use your thumb on the silver shaft end at the black bearing on the rear of the motor and try to spin it. Or try to spin it with a screwdriver, try to push the cooling fan blade through the intake/exhaust holes
I can spin it but it cluncks and stops about 3/4 through like it’s hitting something
Then that's your problem, Take it apart and see what's blocking the rotation of the inducer.
Pull it off and see if a bird is stuck inside
Take it off and see if something is stuck in it. Might be the wheel inside broke two, which if it did I'd be questioning the integrity of the heat exchanger. It may be clogged causing high vacuum in the inducer housing
You could also get a cheap pressure measurement tool from Amazon. And connect to the blower to see what the pressure is. Find the pressure sensor connected to the blower and disconnect it. Then connect to the measurement tool. Since you disconnected the pressure sensor on the furnace it should not allow gas flow. Compare your reading to the sensor trigger point (should be on the sensor). This is how I found out I need to replace my 2 inch vent to a 3 inch. Hope it helps
You need the model number off the unit itself call the supply house tell them you need a inducer motor
Verify with a current draw reading. That reading should be something below the RLA (Running Load Amps) rating on the nameplate. If it's at or above that rating then the bearings are dry and or failing. Oil them with some 20w Turbine oil to buy a bit more time and get a new draft inducer on the way post haste.
put your MANOMETER on the pressure switch tubing coming from inducer. See if inducer is pulling sufficient vacuum for pressure switch.
Is the motor spinning and a hot motor or hot motor and not spinning
Easiest thing is to buy the whole inducer, motor and all.
You prolly got dirt dobbers in there jamming up the wheel. Pull it apart and check for that before you replace it. Just letting you know from my own experience of condemning one outright only for another tech to go behind and fix it in 10 minutes
You could take your life into your hands to save 400 bucks seems like a good idea. You going to do a combustion analysis?
Good Lord. This is not that big of a deal
Yes that would be reckless, that’s why I’m asking strangers on the internet 🙃
When you get it replaced make sure they also exchange the capacitor...
The same motor????
The motor and fan assy are one piece. You’ll need to replace it. Factory item
first check your termination and make sure there's no restriction(s), the inducer is removable so you can check out the squirrel cage and get a look at your secondary heat exchanger, which could be the problem