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Old 12-18-2008, 12:58 PM  
brianky
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HEy...thanks for helping me clarify Glenn. I am definitely learning on the go here. It is my understanding that they installed the heat pump to the furnace. The heat pump does the AC and Heat unless the outdoor temp gets too cold. Then, the gas furnace kicks in. Does that make sense. When I saw the exhaust the gas furnace was running. I had the thermostat set to Emergency Heat so I could see the exhaust...I had physically inspected the flue as much as I could and figure that might be helpful.

The sytem shut down again last night after about 2 hours of normal use...it had only kicked on once in that time. Then, it started with the hum only again. We shut it down for the night by setting the thermostat to off. When we turned the termostat on this morning it came on like normal.

Thanks again for your help Glenn!

ps...here is a blurb from the service company that installed the pump...
http://www.indhvac.com/

"Carrier's Hybrid Heat™ delivers peace of mind to homeowners concerned about the
unpredictable nature of utility costs. Hybrid Heat pairs a gas furnace with an electric
heat pump to provide comfort, economy and flexibility. Your Carrier Hybrid Heat system will automatically switch between electric and gas heating as needed to keep your home comfortable all winter long while optimizing the efficiencies of each fuel source. And, because the heat pump also delivers cool comfort when it's hot outside, your Hybrid Heat system is a complete, year-round indoor comfort solution. Ask your
Carrier dealer if Hybrid Heat is right for you."



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Old 12-18-2008, 07:17 PM  
glennjanie
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Hello Brian:
(As I remove my foot from my mouth)
So, you have a hybird or dual-fuel heating and air conditioning system; that sounds GREAT! I think there may need to be a little fine tuning of the controls and you'll be fine.
Glenn



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Old 12-18-2008, 07:41 PM  
brianky
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No worries Glenn! I thought maybe I had really misunderstood something. Could you give me an idea of what types of fine tuning may need to be done? I am at the mercy of the repair guys that come out and it would be great if I could understand a bit about what they should try before we just start troubleshooting with expensive parts that I pay for whether they are the fix or not. Thanks again for your help!

btw...I have read a lot about the possibility of the control board going bad. I am thinking that is the board with all the wired plugged in to it. Is there a way to check that to know for sure?

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Old 12-19-2008, 11:50 AM  
glennjanie
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Hello Brian:
One quick and dirty way to check the board is to look for hot spots, like burned transistors or resistors and charred spots on the backing.
Glenn

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Old 12-19-2008, 11:55 AM  
brianky
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Thanks Glenn. I had the tech come out again this morning. ...ended up replacing the motor and the fan wheel. He was able to get the fan spinning with the old motor, but had to physically push the wheed to get it going. The motor made sense. I did not understand his reasoning for the fan wheel until I realized that there was a likelihood that he would damage the wheel when removing the motor. He gave a lot of other explanations, but the latter one seemed more realistic. Not sure if that is a normal deal or not, but I went with his advice and replaced both. The company stated that if we did not replace both, that the motor would only be good for 30days rather that a year. Oh well...at least we have heat and it seems to be working normally.

Thanks again for your help Glenn! The piece of mind means a lot!



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