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Why Does Your Ductless AC Keep On Tripping Its Circuit Breaker?

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Does your ductless air conditioner keep on tripping its breaker? If your air conditioner has a dedicated circuit, you can rule out other appliances in the house. Circuit breakers usually trip when they detect an unusual flow of current. They cut off power to the circuit to protect your devices from damage. If the breaker keeps on tripping even after a reset, here are the top things that could be wrong with your AC.

Low Refrigerant

AC refrigerant draws hot air from your home and releases it to the condenser. With the fan's help, the condenser blows cool air over the refrigerant and cools it. Once the refrigerant removes all the warm air and cools the space to the desired temperature, the AC turns off. This cycle continues at regular intervals to maintain constant indoor temperatures.

If your AC is low on refrigerant, it won't cool the home adequately. Failure to attain the preset thermostat temperature causes the unit to run constantly in an attempt to cool the house. The long cooling cycle causes the AC to overheat. The breaker shuts off power to the appliance to prevent damage. You need to fix the leak in your refrigerant line and recharge the fluid to restore the unit's operations.

Faulty Condenser Fan Motor

The condenser fan motor is located in the condensing unit, and its primary role is to draw heat from the condenser coils. When the refrigerant releases heat to the condenser, the fan blows cold outdoor air over the coils and cools the refrigerant. If the motor is faulty, the fan won't remove all the heat from the outdoor unit. 

Fan motor failure may occur due to failed bearings, inadequate lubrication, clogs, or voltage problems. Once the fan fails, the condenser unit may overheat because of excess heat. This causes the breaker to cut off power. If your outdoor unit is hot to the touch, don't reset the breaker because you may cause damage to the condenser unit. 

Compressor Failure

Inside the condensing unit is a component known as a compressor. The compressor compresses the liquid refrigerant to increase its pressure and temperature, a step that is necessary for the cooling process. Once pressurized, the refrigerant turns into vapor and is pushed into the condenser coils, where it loses the heat and reverts into a liquid. 

Compressor failure impedes this cooling process and causes the outdoor unit to retain the heat from your home. This leads to overheating, which can cause the circuit breaker to trip. Besides causing the components to overheat, a faulty compressor also causes the AC to blow warm air into the home.

A tripping circuit breaker usually signals electrical problems in your air conditioner. To prevent damage to the unit's components, contact a company that offers air conditioner repair services to learn more.


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