The exact steps involved in an aircon general service may vary depending on the specific service provider and the type of air conditioning system being serviced. However, the following are some common tasks typically performed during a general service:

1. Cleaning the filters: The service technician will remove and clean the air filters thoroughly. Clogged or dirty filters can restrict airflow and reduce cooling efficiency.

2. Cleaning the condenser coils: The condenser coils, located in the outdoor unit, tend to accumulate dirt, dust, and debris over time. The technician will clean these coils to ensure efficient heat exchange and proper cooling.

3. Checking the refrigerant level: The service professional will check the refrigerant level of the system to ensure it is within the manufacturer's recommended range. If necessary, they may add or remove refrigerant to achieve the optimal level.

4. Inspecting electrical components: The technician will inspect and tighten electrical connections, check for any signs of damage or wear, and ensure proper functioning of electrical components such as motors, capacitors, and relays.

5. Lubricating moving parts: Certain parts of the air conditioner, such as fan motors and bearings, may require lubrication to minimize friction and ensure smooth operation.

6. Checking and calibrating thermostat: The service provider will check the accuracy of the thermostat and calibrate it if necessary to ensure proper temperature control.

7. Checking drainage and condensate lines: The technician will inspect the condensate drain and lines to ensure they are clear of any blockages or obstructions, which can lead to water leakage or damage.

8. Testing the overall performance: Once all the necessary cleaning, inspection, and adjustments are completed, the technician will test the air conditioner's overall performance to ensure it is cooling effectively and efficiently.

The frequency of aircon general service may vary depending on factors such as usage, environment, and manufacturer recommendations. Generally, it is recommended to have an air conditioner serviced at least once a year to maintain its efficiency, prevent breakdowns, and extend its lifespan. However, in certain cases, more frequent servicing may be necessary. It is always best to consult with a professional HVAC technician to determine the ideal service schedule for your specific air conditioning system.