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Old 11-27-2011, 01:18 PM   #1
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Lennox G20 Series with Aprilaire 600


We have a Lennox G20Q5/6E-150-1 furnace and an Aprilaire 8363 thermostat that have worked flawlessly for a number of years....UNTIL we added an Aprilaire 600 whole house humidifier.

Now the system cycles in short bursts, seems to "brown out" like a slow loss of power, sometimes the humidifier shuts down.

Would upgrading to the Aprilaire 8570 thermostat solve the issue and is it compatible with the humidifier and furnace?


Your advice is welcome and appreciated.


Thanks!

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Old 11-27-2011, 01:21 PM   #2
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Lennox G20 Series with Aprilaire 600


Disconnect the humidifier from the thermostat, and see if it still does it first before getting another thermostat.

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Old 11-27-2011, 01:26 PM   #3
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Lennox G20 Series with Aprilaire 600


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Originally Posted by bives View Post
We have a Lennox G20Q5/6E-150-1 furnace and an Aprilaire 8363 thermostat that have worked flawlessly for a number of years....UNTIL we added an Aprilaire 600 whole house humidifier.

Now the system cycles in short bursts, seems to "brown out" like a slow loss of power, sometimes the humidifier shuts down.

Would upgrading to the Aprilaire 8570 thermostat solve the issue and is it compatible with the humidifier and furnace?


Your advice is welcome and appreciated.


Thanks!
how is the humidifier powered?
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Old 11-27-2011, 03:44 PM   #4
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Lennox G20 Series with Aprilaire 600


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Originally Posted by harleyrider View Post
how is the humidifier powered?
It is hard wired to the furnace
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Old 11-27-2011, 04:11 PM   #5
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Lennox G20 Series with Aprilaire 600


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It is hard wired to the furnace
were does it get its 24 volts from, a current sensing relay, or a circut board, or is it piggy backed on the "W" terminal?
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Old 11-27-2011, 04:54 PM   #6
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Lennox G20 Series with Aprilaire 600


Wired into the circuit board
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Old 11-27-2011, 07:53 PM   #7
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Lennox G20 Series with Aprilaire 600


can you post a picture of the humidifier wirering.......its crucial

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