Control board. The control board regulates the supply of power to the furnace components. Be sure to check more commonly defective parts before replacing the control board.

Grid is 1 inch square

Manufacturer Part

1085928 Control Board

Genuine OEM Part # 1085928Alternative Part Number(s)

Manufacturer Part

Grid is 1 inch square

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Skill Level

$196.23

12 Related Expert Content

Skill Level

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Control board. The control board regulates the supply of power to the furnace components. Be sure to check more commonly defective parts before replacing the control board.

$196.23

This part 1085928 is compatible with:

Product Type:: Air Handler, Central Air Conditioner, Furnace, Packaged Unit/RTU

Control Board Customer Reviews

Common Problems Fixed by the Control Board

Based on customer reports and repair data, this part commonly fixes these issues:

Very Likely

Furnace burners won't stay lit

Likely

Air handler blower not running/not turning on

Likely

Air handler not heating

Likely

Furnace blower not running

Likely

Central air conditioner won't turn off

Likely

Furnace not turning on

Likely

Furnace not heating

Possible

Furnace starts then stops

Possible

Air handler blower runs all the time

Possible

Air handler has a burning smell

Possible

Air handler not cooling properly

Possible

Central air conditioner - home's humidity is too high

Possible

Furnace blower is running constantly but there is no heat

Possible

Strange smells coming from furnace

Possible

Furnace is frequently cycling/short cycling

Possible

Air handler wall thermostat not working properly

Possible

Central air conditioner is frequently cycling/short cycling

Possible

Central air conditioner circuit breaker keeps tripping

Possible

Central air conditioner wall thermostat not working properly

Possible

Central Air Conditioner Condensing unit does not run

Possible

Furnace circuit breaker keeps tripping

Possible

Furnace wall thermostat not working properly

Possible

Air handler is frequently cycling/short cycling

Possible

Air handler circuit breaker keeps tripping

Possible

Central air conditioner not cooling properly

About the Control Board

The control board has relays that regulate the voltage to each component in the furnace. If the relay that controls the blower motor fails while it is closed, it will send continuous voltage to the blower motor, causing the motor to run continuously. If the control board is at fault, replace it.