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Old 01-03-2012, 09:06 PM   #1
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Carrier Furnace and Aprilaire not working


I hope there is an easy fix - I purchased a new Carrier Weathermaker 9200 about 7-years ago. Not getting much humidity so I went to change the water pad in the Aprilaire 700 humidifier. The pad is scale free, the fan is spotless - both look like they have never been used - I have seen the humidifiers after a couple of years and know they get very thick buildup. I tried to do the test mode on the humidifier with the furnace fan running and nothing happened. I checked the wireing and nothing is obvious. I don't think this thing has run for years. any advice?

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Old 01-03-2012, 09:12 PM   #2
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Carrier Furnace and Aprilaire not working


turn the humidistat to the test mode, turn temperature up on furnace at thermostat......make sure the water is on to the humidifier. wait a few minutes and you should have water flow and the fan should be running,if not you will need a volt meter to start trouble shooting.

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Old 01-03-2012, 09:22 PM   #3
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Carrier Furnace and Aprilaire not working


Thanks Harley - that did get some water running, but still no fan turning on in the unit - however, it is now giving some water, so that is good.
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Old 01-03-2012, 09:29 PM   #4
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Carrier Furnace and Aprilaire not working


can you follow the large black wire and make sure the unit is plugged in?
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