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Old 03-01-2010, 07:49 PM   #16
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Tempstar Furnace


There are jumper switches on the control board. It starts at 40 - 60 - 80 - 120 - 140 - 180. I may have added a couple extra in there. Anyway, it's set at 140. What are this jumper for?

Is swapping the blower wires safe? How is that done? My manual does not say anything about this.

I will post up pics when I get my hands on my digital camera.

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Old 03-05-2010, 06:28 AM   #17
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Boy is lickll gonna be upset when he finds out that the dude that installed that furnace didn't even look to clean the existing evaporator coil and it's matted with Muffy's 30 year old fur and that's why it doesn't matter what blower speed the motor's on...aka...bye bye new heat exchanger
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Old 03-05-2010, 07:12 AM   #18
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Originally Posted by Affordable7 View Post
Boy is lickll gonna be upset when he finds out that the dude that installed that furnace didn't even look to clean the existing evaporator coil and it's matted with Muffy's 30 year old fur and that's why it doesn't matter what blower speed the motor's on...aka...bye bye new heat exchanger
Please elaborate more. Which part is the evaporator coil?
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Old 03-05-2010, 10:35 AM   #19
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Originally Posted by Affordable7 View Post
Boy is lickll gonna be upset when he finds out that the dude that installed that furnace didn't even look to clean the existing evaporator coil and it's matted with Muffy's 30 year old fur and that's why it doesn't matter what blower speed the motor's on...aka...bye bye new heat exchanger
Is the evaporator coil something that I can clean myself?

Also, do you know how to change the blower speed?
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Old 03-05-2010, 10:40 PM   #20
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The evaporator coil is above the furnace..in the brown looking box between your plenum and the new furnace...it has an aluminum finned coil that needs to be clear of any hair, etc, obstructions. When that furnace was installed...THE INSTALLER SHOULD HAVE AT LEAST LOOKED AT THAT COIL AND CLEANED IT since he had a wide open area to clean. Now it's gonna be rather difficult if you don't have an access panel to clean it. If you have an access panel remove the screws and remove it to expose the aluminum coi...there will be another triangular cover to get into the "A" coil to clean the underside of it (where the air flows from the furnace to the house). If this is matted, you won't get any air flow across the coil...ie..heat or cooling.

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