Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpGibson Central A/C RepairGibson Central air conditioner compressor won't run Repair
Gibson Central air conditioner compressor won't run
If your Gibson central air conditioner compressor won't run, the compressor itself may be defective, but it is not usually the first part to replace. The most likely causes, in order, are a failed compressor, start capacitor, contactor, run capacitor, capacitor, or dual run capacitor. A bad compressor can cause an AC compressor not running, an air conditioner compressor that won't start, or a central AC compressor not working. If the compressor is humming but not starting, a failed start capacitor is a common cause. A defective contactor can also stop voltage from reaching the compressor, while a burned-out run capacitor or dual run capacitor can prevent startup. Turn off power at the disconnect box and circuit breaker before inspecting anything. Testing capacitors, contactors, and compressor continuity involves hazardous stored or 240-volt electricity, so use proper safety procedures or hire a qualified technician. Any repair involving refrigerant, the sealed system, refrigerant lines, or service valves requires an EPA 608-certified HVAC technician. Enter your Gibson central air conditioner's model number to find the exact replacement compressor, capacitor, or contactor for your unit.
01 - Gibson Central Air Conditioner Compressor
The compressor is a pump which compresses the refrigerant and circulates the refrigerant through the evaporator and condenser coils. If the compressor is defective or worn out, it likely won't run. However, this isn’t usually the case. Before replacing the compressor, first check all of the more commonly defective components. If all of the other components are working properly, use a multimeter to test the compressor for continuity. If there is an open circuit, the compressor is likely defective.
Enter model number to search for the required part specific to your product
Highly Likely
02 - Gibson Central Air Conditioner Start Capacitor
A start capacitor is often used to cycle on the compressor. If the capacitor burns out, the compressor may not run. The start capacitor can be tested with a multimeter to determine if the component can successfully hold and release its charge. If the capacitor is unable to hold and release a charge, or is bulging or leaking, the capacitor will need to be replaced.
Common
03 - Gibson Central Air Conditioner Contactor
The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it can prevent the compressor from running. To determine if the contactor is at fault, use a multimeter to test the contactor coil for continuity. If the contactor coil does not have continuity or the contacts a on the coil look burnt, replace it.
Common
04 - Gibson Central Air Conditioner Run Capacitor
A run capacitor will power either the compressor or the fan motor (a dual run capacitor will power both). If the capacitor burns out, the compressor may not run. To determine if the run capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
05 - Gibson Central Air Conditioner Capacitor
The capacitor provides voltage to the compressor to start it. If the capacitor is defective, the compressor won't run. To determine if the capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
06 - Gibson Central Air Conditioner Dual Run Capacitor
A dual run capacitor will power both the compressor and the fan motor. If the capacitor burns out, the compressor may not run. To determine if the dual run capacitor has failed, test the capacitor with a multimeter. If the capacitor is unable to hold and release a charge or is bulging or leaking, replace it.
Less Common
Frequently Asked Questions
Why is my Gibson central AC compressor not running?
How do I test a Gibson AC start or run capacitor?
What should I check if my Gibson AC condenser is not turning on?
How can I tell if the Gibson AC compressor is defective?
How do I identify the correct Gibson central air conditioner part?
Shop by Gibson Central Air Conditioner Parts
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com