AC Not Turning On in Pompeii, MI
AC not turning on in Pompeii, MI is a control problem more often than a mechanical one. The thermostat calls for cooling, nothing happens, and the house heats up. Our crew starts on the low voltage side because that is where the answer usually is.
The 24 volt control circuit runs from a transformer in the air handler or furnace to the thermostat and out to the condenser. A blown 3 amp fuse on the control board kills the whole thing. So does a float switch in the drain pan that tripped because the condensate line backed up. That safety switch is doing its job, and the real fix is clearing the drain line.
Other causes on our list: dead thermostat batteries, a loose wire at the thermostat base, a tripped breaker at the panel, a pulled disconnect at the outdoor unit and a failed transformer. On older systems we sometimes find a rodent has chewed the thermostat cable where it runs along the foundation.
We test each point with a meter and show you the reading. Call (866) 703-1217 when your AC not turning on leaves you guessing.