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  1. 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...