Maybe it won’t turn on, or it no longer heats up appropriately. Grounded, Open, or Shorted Motor. On that note, it’s a good idea to be cautious and turn off your AC before investigating the problem if you suspect electrical damage. What’s the key to troubleshooting complex equipment? If the power came back but your air conditioning still won’t turn on, you should check the circuit breaker. Pumps move the heated or cooled water to the exchangers. IAQ and Mold in NYC Buildings: Are Kids at Risk? //