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Repairing a Central Air Conditioning System


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PROBLEM: Short “On” Compressor Cycle
Possible Causes:
A short cycling compressor, one that turns on and off frequently, is a symptom of an obstructed thermostat, leaking refrigerant, iced coils or in some cases, an over sized cooling system.

Possible Solutions:

  • Ensure thermostat is not obstructed;
  • Obstructed (dirty or excessively bent) condensing fins in outside condensing unit (if bent fins, repair with a fin comb);
  • Dirty air filter;
  • Incorrect refrigerant charge (requires service technician);
  • Refrigerant leak (requires service technician);
  • Replace over sized condensing unit and coils (requires service technician).

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