If your air conditioning unit is not working properly, here are some steps you can take to try to diagnose and repair the problem:

  1. Check the thermostat: Make sure the thermostat is set to the correct temperature and that it is turned on. If it is battery-operated, check the batteries and replace them if necessary.
  2. Check the air filter: A dirty air filter can restrict airflow and cause the AC unit to work less efficiently. Check the filter and replace it if it is dirty.
  3. Check the circuit breaker: If the AC unit won’t turn on at all, check the circuit breaker to make sure it hasn’t tripped.
  4. Check the condenser: The condenser is the outdoor unit of the air conditioning system. If it is dirty or blocked, it can cause the AC unit to malfunction. Check the condenser and clean it if necessary.
  5. Check the refrigerant levels: If the AC unit is not producing cold air, it may be low on refrigerant. A professional technician will need to check the refrigerant levels and add more if necessary.

If these steps do not solve the problem, it is best to call a professional technician to diagnose and repair the issue. Attempting to repair an air conditioning unit without the proper knowledge and tools can be dangerous and cause further damage.