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ST9120C4057 Furnace Fan Control Board Replacement for Honeywell Furnace Fan Control Circuit Board，ST9120C2010 ，ST9120C4040 ， HQ1084197HW ，ST9120C5005 ，ST9120C4016

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Free shipping on orders over $29.99

$85.99

$ 33 .99 $33.99

In Stock
  • How to solve the problem of the communication fan not being turned on. If you only turn on the fan, it will work, but if you turn on the AC fan, the fan will not work. Do not connect the Y wire of the thermostat to the circuit board. Simply twist the condenser wire instead of connecting it to the circuit board, and everything will work properly
  • Maximum Blower Loading: 15FLA, 30LRA @ 120 VAC; 7.5FLA, 15LRA @ 240 VAC
  • 50/60Hz Maximum Blower Loading: 15FLA, 30LRA @ 120 VAC; 7.5FLA, 15LRA @ 240 VAC Maximum Inducer Loading: 3FLA, 10LRA @ 120 VAC; 1.5FLA, 5LRA @ 240 VAC
  • Humidifier Terminal: .8A @ 115 VAC Electronic Air Cleaner: .8A @ 115 VAC
  • The 24 volt circuit of this control is protected by a 5 amp replaceable automotive type fuse.


How to solve the problem of the communication fan not being turned on. If you only turn on the fan, it will work, but if you turn on the AC fan, the fan will not work. Do not connect the Y wire of the thermostat to the circuit board. Simply twist the condenser wire instead of connecting it to the circuit board, and everything will work properly.


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