Problem
Ice forms on the outside AC unit or refrigerant lines, reducing cooling performance.
Possible Causes
Dirty air filter
Low refrigerant
Restricted airflow
Dirty evaporator coil
How To Fix It
Turn the AC off and allow the ice to melt
Replace the air filter
Ensure vents are open and airflow is not blocked
Restart the system once the ice has thawed
When To Call A Professional
If the system continues freezing, a technician should check refrigerant levels and airflow issues.
ProblemThe AC compressor repeatedly clicks on and off without running normally. Possible CausesFaulty capacitorElectrical issueCompressor overload protectionLow refrigerant How To Fix ItTurn the system off temporarilyInspect the breaker panelCheck for unusual noises at the outdoor unitRestart the system after cooling down When To Call A ProfessionalFrequent compressor clicking should be inspected by an HVAC technician.
ProblemThe AC unit makes a humming sound but the fan or compressor does not start, preventing the system from cooling the home. Possible CausesFailed capacitorStuck condenser fan motorFaulty contactorCompressor beginning to fail How To Fix ItTurn off power to the AC unitInspect the outdoor unit for debris blocking the fanCheck the breaker and thermostat settingsAllow…
ProblemYour air conditioner is running, but the house temperature is not dropping. Possible Causes How To Fix It When To Call A Professional If the system runs continuously but never cools the house, the unit may have a refrigerant leak or compressor issue that requires a licensed HVAC technician.
ProblemThe thermostat display is blank and the AC system does not respond. Possible CausesDead batteriesTripped breakerFaulty thermostat wiring How To Fix ItReplace thermostat batteriesCheck the breaker panel When To Call A ProfessionalIf the thermostat remains blank, wiring or device replacement may be required.
ProblemThe AC system struggles to cool because the outdoor condenser coil is covered with dirt or debris. Possible CausesOutdoor dust and dirt buildupLeaves or debris around the unitLack of regular maintenanceRestricted airflow How To Fix ItTurn off power to the outdoor unitRemove debris from around the unitGently rinse coils with waterEnsure proper airflow around the…
ProblemThe outdoor AC unit does not start, preventing the system from removing heat from the home. Possible CausesTripped breakerFailed capacitorBad contactorThermostat wiring issue How To Fix ItCheck the breaker panelInspect the outdoor disconnect switchMake sure the thermostat is calling for coolingListen for humming or clicking from the unit When To Call A ProfessionalIf power is…