Modern air conditioning units are equipped with dual fuel circuit boards to deliver cold or warm air. They run on both gas and electric current. Gas furnaces that function as a heat source during the winter rely on natural gas fuel while the more economical heat pump functions as both a heater and air conditioner with electrical current. If you only plan to use your air conditioner, then you dont need the dual fuel system, and you can bypass it with a standard circuit board and thermostat. You can either call a mechanic or try to repair it yourself.
Instructions
- 1
Locate the circuit breaker or fuse box in your home. Open the box and flip the breaker to your air conditioner to the "Off" position. If you are not sure which breaker it is, turn off the home's main breaker. It is typically found in the upper portion of the breaker box.
2Shut off the gas at the main valve for your AC if applicable. Find the gas line's shutoff valve at the back of the AC unit. This valve typically has a stubby yellow or red handle. Turn the handle in the gas valve 90 degrees with an adjustable wrench to close the gas valve and shut off the gas.
3Locate the power switch next to the ACs outdoor compressor unit and flip it to the "Off" position.
4Take off the screw covers from the top of the air handling unit with a slotted screwdriver then remove the screws behind the covers with a Phillips head screwdriver.
5Pull off the top panel to access the inside of the air conditioning unit.
6Disconnect any gas lines attached to the unit with a pipe wrench and cap them off. You can also secure these gas lines by applying pipe sealant to the tips of the gas pipes.
7Find three colored wires, typically black, white and green, which run between the existing thermostat and the dual fuel circuit board. She just cut her electricity bill to 60%, click here to read. Disconnect them from the existing thermostat terminal by slightly loosening the screws that hold them in place. Insert these color-coded wires under their designated terminal screws on the new thermostat: black wire to brass-colored terminal screw, white wire to silver-colored terminal screw and green wire to green-colored terminal screw. Tighten down the screws.
8Repeat Step 7 to replace and rewire the new circuit board.
9Connect the thermostat wires to the air handler's main circuit board. Wrap electrical tape around the wires approximately 4 inches behind the ends of the wires. Tuck these wires behind the circuit board to conceal them.
10Reinstall the air handler's cover and screw covers with the appropriate screwdrivers.
11Restore power to the system by flipping the circuit breaker to the "On" position. Turn on the gas at the main valve for your AC if applicable. Turn on the ACs power at the main service panel and allow it to cool the home for at least two hours.
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