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Home > Make a VRF aircon system checklit

Make a VRF aircon system checklit

General Inspection

Check for any visible signs of damage or wear on the outdoor and indoor units.

Ensure that all air filters are clean and properly installed.

Inspect the refrigerant lines for leaks or insulation issues.

Verify that all electrical connections are secure and free from corrosion.

System Performance

Measure and record the temperature of the air entering and leaving the indoor units.

Use a calibrated thermometer.
Position the thermometer at the air intake and outlet of each indoor unit.
Record the temperatures accurately.
Compare readings to expected values for efficiency.

Check the refrigerant pressures against manufacturer specifications.

Connect pressure gauges to the service ports.
Ensure system is operating in normal mode.
Record both high and low side pressures.
Compare recorded pressures to the manufacturer's specified ranges.

Monitor the system for unusual noises during operation.

Listen for any hissing, banging, or grinding sounds.
Identify the source of any unusual noises.
Check for loose components or debris.
Document any irregularities for further investigation.

Assess the overall airflow and ensure that it meets design specifications.

Use an anemometer to measure airflow at the supply vents.
Compare airflow readings to design specifications.
Inspect filters and ductwork for obstructions.
Ensure all dampers are functioning properly.

Controls and Settings

Confirm that the thermostat is functioning correctly and is set to the desired temperature.

Review the control settings for each indoor unit to ensure proper operation.

Check for any error codes on the control panel and troubleshoot as necessary.

Ensure that all timers and scheduling features are programmed correctly.

Maintenance and Cleaning

Clean or replace air filters as needed.

Remove any debris or obstructions around the outdoor unit.

Inspect the condensate drain for blockages and ensure proper drainage.

Schedule regular maintenance appointments based on manufacturer recommendations.

Documentation

Record all findings and measurements in the maintenance log.

Document any repairs or parts replacements performed during the inspection.

Ensure that all warranty and service agreements are up to date.

Provide a detailed report to the client, summarizing the inspection results and any recommended actions.

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