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Old 02-11-2012, 09:09 AM   #1
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I have a Carrier 58MVP Furnace. High blower is not engaging. What do you suggest?

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Old 02-11-2012, 09:11 AM   #2
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need a bit more info. not engaging in "on", in heat and/or in cooling modes?

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Old 02-11-2012, 09:17 AM   #3
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We are definitely in Heat mode. Very cold in our neck of the woods. Low blower is working, but won't kick into High blower.
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Old 02-11-2012, 09:22 AM   #4
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Not understanding low and high speed while on call for heat. What type of furnace do you have? Can you post make and model number?

And can you say if this is a new problem versus last year when you put it in heating mode?
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Old 02-11-2012, 09:23 AM   #5
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That is a high end furnace with an ecm electronically commutated motor and circuit board. Not much a DIYer can do with it so you may want to call a Carrier tech. There were problems with some resistor blowing on the circuit board or in the motor module and some electronics repairing posters managed to fix it but unless you do that for a living a tech is required.
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Old 02-11-2012, 09:24 AM   #6
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And can you describe the problem specifically? Is your home warming up? Is the furnace blowing warm air? Is your system cycling meaning is desired set point of thermostat being reached, system shuts down and then starts again all via the stat to maintain temperature?
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Old 02-11-2012, 09:26 AM   #7
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Quote:
Originally Posted by yuri View Post
That is a high end furnace with an ecm electronically commutated motor and circuit board. Not much a DIYer can do with it so you may want to call a Carrier tech. There were problems with some resistor blowing on the circuit board or in the motor module and some electronics repairing posters managed to fix it but unless you do that for a living a tech is required.

How do you know what kind of furnace it is?
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Old 02-11-2012, 09:27 AM   #8
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We have a Carrier Model 58MVP. Never had this problem.
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Old 02-11-2012, 09:30 AM   #9
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that is no high end ecm motor. I'm still not certain there is a problem to begin with if the blower is coming on and warm air is being delivered to the space.
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Old 02-11-2012, 09:33 AM   #10
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Set the temp @ 63 overnight. Morning it was @ 61 and running. Turned thermostat up to 65. High blower never engaged. Low blower going, but stops and restarts. It is now up to 62. Has not reached setting on thermostat.
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Old 02-11-2012, 09:41 AM   #11
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MVP , V= variable speed motor = ecm. I have worked on LOTS of them.
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Old 02-11-2012, 09:45 AM   #12
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I thought it was a single stage 80%.
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Old 02-11-2012, 09:46 AM   #13
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yuri is 100 % correct, there is nothing a DIY'er can do himself on that furnace to solve the problem.....call a CARRIER tech not just anybody out of the yellow pages. If do not follow there suggestions I promise you, you will be creating a nightmare for yourself.
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Old 02-11-2012, 10:05 AM   #14
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dosy, how far are you from Graceland? I am listening to Elvis Radio on Sirius satellite online and he is eternal and the King!
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Last edited by yuri; 02-11-2012 at 10:22 AM.
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Old 02-11-2012, 12:26 PM   #15
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AAhh ggeeeze Yuri....

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