Troubleshooting Guide: What to Do When Your Commercial Cooling System Won’t Turn On

NY Heating Team

Facing a non-responsive commercial cooling system can be a stressful experience for any homeowner or facility manager.  Whether you’re dealing with a scorching summer day or trying to maintain optimal temperatures for your products or employees, a malfunctioning system can be a major headache during the warmer months. We’re here to provide a comprehensive troubleshooting guide on what to do when your cooling system won’t turn on that will help diagnose and resolve the issue quickly and efficiently:

Check the Power Supply

The first step in troubleshooting a non-responsive cooling system is to ensure that it’s receiving power. Start by checking the power switch or circuit breaker connected to the cooling system. If the switch is off or the breaker has tripped, simply reset it and see if the system turns on. Additionally, inspect the power cord for any visible damage or loose connections. If everything appears to be in order, proceed to the next step.

Inspect the Thermostat

A malfunctioning thermostat can often be the culprit behind a cooling system failure. Begin by checking the thermostat settings to ensure that it’s set to “cool” and the temperature is set below the current room temperature. If the thermostat is battery-operated, replace the batteries and see if that resolves the issue. You can also try manually bypassing the thermostat by directly connecting the cooling system to power to determine if the thermostat is the problem.

Check the Air Filters

Clogged or dirty air filters can restrict airflow and cause the cooling system to malfunction. Inspect the air filters and replace them if they appear dirty or clogged. Regularly changing the air filters is essential for maintaining the optimal performance and efficiency of your commercial cooling system.

Examine the Circuit Board

If the cooling system still won’t turn on after checking the power supply, thermostat, and air filters, there may be an issue with the circuit board. Inspect the circuit board for any visible signs of damage, such as burnt components or loose wires. If you’re unfamiliar with circuit board troubleshooting, it’s best to consult with a professional technician to diagnose and repair the issue safely.

Inspect Additional Components

If the basic checks don’t resolve the issue, it’s time to inspect the components of the cooling system. Look for any visible signs of damage or wear and tear, such as frayed wires, corroded connections, or damaged compressor coils. If you’re comfortable doing so, you can attempt to troubleshoot and repair minor issues yourself. However, it’s best to enlist the help of a professional technician.

Condensate the Drain

A clogged condensate drain can also prevent the cooling system from turning on. Check the condensate drain line for any blockages or buildup of debris. If necessary, clean out the drain line to ensure proper drainage and prevent water damage to the system.

Check for Refrigerant Leaks

Low refrigerant levels can prevent your commercial cooling system from turning on and operating efficiently. Inspect the refrigerant lines and connections for any signs of leaks, such as oil spots or hissing sounds. If you suspect a refrigerant leak, it’s crucial to call in a professional technician to locate and repair the leak and recharge the refrigerant to the appropriate levels.

Test the Capacitor

A faulty capacitor can also prevent your commercial cooling system from starting up. Locate the capacitor, typically found in the outdoor unit, and visually inspect it for any bulging or leaking. You can also perform a capacitance test using a multimeter to determine if the capacitor is functioning properly. If the capacitor is defective, it will need to be replaced by a qualified technician to restore proper operation of the cooling system.

Call for Professional Help

If you’ve exhausted all troubleshooting steps and your cooling system still won’t turn on, it’s time to call in the experts. A qualified HVAC technician can diagnose the problem accurately and recommend the necessary repairs or replacements. Attempting DIY repairs beyond your expertise can potentially cause further damage to the system and compromise its efficiency.

While dealing with a cooling system that won’t turn on can be frustrating, a systematic approach to troubleshooting can help you identify and resolve the issue efficiently. Remember, regular maintenance and prompt repairs are key to maximizing the lifespan and performance of your unit. As a trusted heating company, New York Heating is here to support your system maintenance and keep it in top condition with a team of experienced technicians. Don’t hesitate to contact us for your cooling system needs.

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