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No high speed on blower motor - Carrier Heating & Cooling

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If motor works on heat, but not on cool ,then the low speed is energized by the heat strip or control board .if the motor doesn't run in high on cool, then the fan relay or black high speed tap from the board is not being energized. usually its the fan relay ,which is only a factor in cool in high speed fan mode. try turning fan to on at stat. that energizes fan relay and blower should run in high. gently tap the side of the fan relay and see if fan comes on all of a sudden. if it does the relay is bad. change it wire for wire label all wires and use exact replacement relay unless you know how to read wiring diagram then you can use a 90-340 generic fits all replacement. trace motor power wires back to relay or control board to find where they are fed from.

Posted on Dec 07, 2008

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Posted on Jan 02, 2017

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I replaced the blower, and resister on my 2012 chevy. impala but blower still don't work. What fuse do I need to check


The fuse box should be under the hood, passenger side. Try the upper box, middle right side Mine is huge, 30 amp

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2006. I switched the vents from front to feet and defrost and turned it up all the way and it stopped blowing. Why?


That is the blower motor relay, probably . You have all speeds but high ? High speed has a direct path to the blower motor through a high blow relay . All other speeds go through the blower motor resistor assembly . This relay is part of the blower motor resistor assembly > That is if you have manual HVAC system .
Blower Motor Resistor Assembly (CJ3)
Under the right side of the I/P mounted to the HVAC box next to the blower motor.

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Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

Thanks.

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1 Answer

Sorry its blower



Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

These will help.

Thanks.

Dec 07, 2012 | 2006 Kia Sportage

1 Answer

Heater is not working


HEATER BLOWER MOTOR


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

These will help.

Thanks.

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3 Answers

I only get the fan to work on high speed, the lower speeds do not work


Hi!!
The Blower Motor Resistor also called Manual Temp. Control resistor), is fried, replace. The price with floor console $25 and without floor console $65. here is a pic.
87b9810.jpg

the resistor is located on the blower motor housing, fastened by two screws. It is the part where the electrical plug connects, the plug on the pic. goes to the blower motor.
A HELPFUL - 4 THUMBS rating for this solution would be greatly appreciated. Thank you for using FixYa.

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Front blower motor doesn't work, rear does


yes, all blower motors have them to control their speed, High, medium, low.. etc. I earn nothing by helping you, but my rating, a fixya rating and I will walk you through this

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