How do you troubleshoot a residential air conditioner?

The Issue: Your A/C Turns On But Isn’t Cooling Check the thermostat to make sure it’s working properly. Take a look at the condenser to see if it’s dirty or blocked. Clean and/or change your filter (We recommend once a quarter.) See if any ice has formed on the coils. Check and/or clean the outdoor compressor. Click to see full answer. People also ask, how do you diagnose home AC problems? Check for a dirty air filter Low airflow from air vents. Ice on refrigerant lines. Frozen evaporator coil. Water leaking from your AC. Inadequate cooling (hot/cold spots, AC struggles to reach set temperature) Higher-than-normal energy bills. Equipment failure. Also, how do I reset my home AC? Here are the steps you need to take to reset your AC thermostat. Shut Down Your AC at the Thermostat. The first step in resetting your AC thermostat is to turn it off at the AC unit. Find Your Circuit Breaker Box. Reset the Circuit Breaker for Your AC Unit. Wait 30 Seconds. Turn the AC Thermostat Back On. Subsequently, one may also ask, why is my air conditioner running but not cooling the house? Clean the HVAC Interior Next, clean out the condenser, evaporator, filters and coil. If these are dirty and clogged by debris, air flow within your unit may be restricted, which can severely affect the efficiency of your unit as a whole.Why did my AC suddenly stop working?When your air conditioner suddenly stops working, it can be cause for alarm or it can be something as simple as a blown fuse or tripped circuit breaker. It is important to note that many common problems with air conditioners can be caused by inadequate maintenance.