There is the possibility some of the wires in your air conditioning furnace may have burned out. If your wires have burned out, your HVAC furnace won't work. You want to make sure that the furnace on/off switch is working correctly too. If you have no high voltage to your HVAC furnace, it cant be converted to 24 volts low voltage. As HVAC technology evolves, we'll continue to see electronic HVAC boards in furnaces. Most units require computer boards to work correctly for the common wire to get 24 volts. The board is the brain of the cooling and heating system. If just a small part of the board doesn't operate properly, your Nest might not work. The transformer sends the 24 volts into your board, but sometimes the 24 volts doesn't come out of your board. An emergency ac repair Houston Galleria Midtown 77056 77057 diagnosis is required to figure out if your board is defective. Most of the time, the board has to be replaced, or the board has to be professionally repaired by a highly-skilled emergency ac repair Midtown Montrose Heights 77007 77008 technician. It is essential to perform regular maintenance year-round; many problems will be prevented with routine ac repair Houston maintenance. Most people wait until the unit stops working before they call for 24 hour emergency ac repair Houston Heights Midtown service. However, sometimes the equipment can break down on at the worst hours. We perform emergency ac repair Midtown 77004 77003 & Montrose 77006 service for your added convenience.

There is a transformer in your air conditioning furnace. The transformer is what supplies 24 volts to your Nest thermostat. If your transformer malfunctions, your Nest won't come on. Your transformer converts the high voltage to 24 volts. It then sends power to your common wire or neutral, low voltage wire. There are emergency safety switches that protect your air conditioning system from flooding. One of the most common locations for emergency ac repair midtown Tx safety switches is the float switch in your HVAC emergency drain pan. If your Nest is showing a blank screen, it is a good chance; you might have a water leak in the attic. The water activates your emergency safety switch, thus cutting power to your HVAC transformer. This deactivates all the 24 volts going to your furnace. There is also a baseplate that connects to the Nest. We have seen baseplate go bad on rare occasions.