How To Troubleshoot Common Issues With Commercial Air Conditioning Systems

Commercial air conditioning systems play a critical role in maintaining comfortable and productive work environments. However, like any mechanical system, they can develop issues that affect performance, efficiency, and reliability. Knowing how to troubleshoot commercial air conditioning problems can help facility managers and maintenance staff address minor issues before they escalate into costly repairs.

This guide outlines common commercial air conditioning issues, their possible causes, and troubleshooting steps to keep systems running smoothly.

• Dirty or clogged air filters
• Refrigerant leaks or low refrigerant levels
• Blocked or dirty condenser coils
• Malfunctioning thermostat

• Check and replace air filters regularly to ensure proper airflow.
• Inspect condenser coils and clean any dirt or debris that may be restricting heat exchange.
• Check refrigerant levels—if the system is low, it may have a leak that requires professional repair.
• Verify thermostat settings and recalibrate if needed.

If cooling issues persist, professional commercial air conditioning services in Townsville can diagnose and fix refrigerant or mechanical problems.

• Loose or worn-out fan belts
• Debris obstructing the fan or motor
• Failing compressor
• Loose internal components

• Inspect the fan and motor for obstructions and remove any debris.
• Tighten loose belts or replace them if they show signs of wear.
• Listen for unusual sounds—grinding or screeching noises may indicate motor or compressor failure.
• If the issue persists, call an HVAC professional to assess the compressor or motor for potential repairs.

• Blocked air vents or duct obstructions
• Incorrect thermostat placement
• Issues with zoning systems

• Check air vents and registers to ensure they are open and not obstructed by furniture or equipment.
• Inspect ductwork for leaks that could be causing uneven airflow.
• Reposition thermostats if they are placed near heat sources or in direct sunlight.
• If the problem persists, consider a zoning system upgrade for better temperature control.

• Dirty evaporator and condenser coils
• Poor insulation in the ductwork
• Aged or inefficient AC components

• Schedule regular coil cleaning to improve energy efficiency.
• Inspect and seal duct leaks to prevent energy loss.
• Consider upgrading to energy-efficient components if the system is old or outdated.

Regular maintenance of commercial air conditioning in Townsville helps prevent excessive energy consumption and costly breakdowns.

• Power supply issues
• Tripped circuit breakers
• Faulty thermostat or control board

• Check the power supply and ensure the system is properly connected.
• Reset any tripped breakers and monitor for recurring electrical issues.
• Test thermostat functionality and replace batteries if needed.
• If the system still won’t start, consult a professional HVAC technician.

• Malfunctioning dehumidifier settings
• Clogged drainage lines
• Dirty air filters and ductwork

• Ensure the dehumidifier function is activated if the system has one.
• Clear drainage lines to prevent moisture buildup.
• Schedule professional duct cleaning to remove contaminants affecting air quality.

Maintaining proper humidity control is essential for indoor air quality and preventing mould growth.

Routine maintenance is the key to preventing major issues and extending the lifespan of commercial air conditioning systems. Facility managers should schedule:

• Quarterly filter replacements to maintain airflow efficiency.
• Annual coil and duct cleaning to prevent dust buildup.
• Seasonal inspections to check for refrigerant leaks, electrical issues, and mechanical wear.

For ongoing reliability, partnering with an experienced commercial air conditioning service in Townsville ensures timely maintenance and repairs, reducing the risk of unexpected failures.

At GSA Group, we provide professional commercial air conditioning maintenance and repair services, keeping businesses comfortable and energy-efficient. Contact us today to schedule an inspection and keep your system performing at its best.