Or, if you don’t know why it keeps tripping, call an HVAC professional to diagnose the problem. If the breaker trips again, consider shutting off other equipment that may be contributing to the problem. Keep in mind that breakers often trip because a circuit is overloaded. Is one of the breakers tripped? It might be the one that connects to your HVAC system. You’ve got a tripped circuit breaker.Ĭheck your breaker box. The outdoor one might have been switched off for any number of reasons, and it’s pretty easy to check and reset if necessary. Yes, there is.īuilding codes mandate that switches be installed next to your AC’s indoor and outdoor units. You mean there’s another disconnect switch? Yes. It happens.Īnyway, make sure the disconnect switch is set to “on” before doing any additional troubleshooting. Someone may have bumped it… or something. This could have been turned off by accident, especially if it’s in your attic or garage. You can certainly call an HVAC company to fix this, but that costs way more than a few AAAs.īonus (or Reason #1.5): Make sure your thermostat is set to “cool.” If it isn’t, you’re either running the heat or you’re just spinning the fan! 2. Simple as that.Ĭhanging the thermostat batteries should be your first line of defense when the screen is blank and you don’t know why. Your thermostat isn’t displaying anything, and it’s because the batteries are out of juice. Sometimes, there’s nothing wrong with your air conditioner at all.
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