New Furnace Control Board

New Furnace Control Board. Hvac guy suggested replacement unit as he says replacing the bad control board is almost as expensive. Now it’s time to make all the connections.

622533801 Rheem Ruud Furnace Control Board from arnoldservice.com

If it determines something is wrong, it shuts the furnace down to protect itself and you. The average furnace circuit board replacement cost is $700. The control board is the central “brains” of how your furnace operates.

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Just like a contactor on the condenser outside, the control board at the furnace has miniature relays which allow certain motors to receive the voltage they need to operate. The ac unit to this furnace just had a compressor.

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The furnace control board powers and regulates all heating functions, including the gas valve, ignition, the fan’s blower motor, burner unit, heat exchanger, and flame sensor. This can be tested right at the furnace control board too, avoiding all doubt about the thermostat wiring.

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Remove face of old thermostat. The control board runs a series of operations—starting the electronic ignition, opening the gas valve, checking the burner unit, activating the blower, shutting off the gas, venting the heat exchanger—that moves the furnace.

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Attach the white wire from the auxiliary junction box to one neutral spade connection placed in front of pl1. Use your pictures of the old control board as a reference (you remembered to take pictures right?).

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Attach the white wire from the auxiliary junction box to one neutral spade connection placed in front of pl1. Remove face of old thermostat.

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To install the new control board, screw it down inside the furnace the same way that the old one was. Attach the furnace’s black wire from the auxiliary junction box to l1 on the new control board.

Take A Picture Of The Wires.

What does a furnace control board do? Integrated furnace control board modules are modern control board modules found in newer furnaces. More precisely, how much would it cost to replace a furnace circuit board.

Reconnect Wires To The New Control Board.

And just like the contactor on the condenser, those furnace relays start to pit and burn from arcing that occurs across the contacts as they close. You may now connect the blower motor leads to the new control board. Furnace motherboards relay thermostat settings to the furnace to create the desired home temperatures.

Now It’s Time To Make All The Connections.

What is the furnace control board? Attach the furnace’s black wire from the auxiliary junction box to l1 on the new control board. The average furnace circuit board replacement cost is $700.

You Can Test The Furnace Controls Without The Thermostat.

Once it is loose and free from the furnace you will need to turn it over and release the control board from the back of the mounting panel then simply align the new control board pins with the holes in the mounting panel and snap it into place. Attach the white wire from the auxiliary junction box to one neutral spade connection placed in front of pl1. Remove face of old thermostat.

Hvac Guy Suggested Replacement Unit As He Says Replacing The Bad Control Board Is Almost As Expensive.

This can be tested right at the furnace control board too, avoiding all doubt about the thermostat wiring. If it determines something is wrong, it shuts the furnace down to protect itself and you. The l1 is typically found on the blower enable relay.