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HomeRepair HelpPhilco Central A/C RepairPhilco Central air conditioner is noisy or loud Repair
Philco Central air conditioner is noisy or loud
When your Philco central air conditioner is making loud noise, start with the simplest likely cause: debris hitting the outdoor fan. Turn off power at the disconnect box and circuit breaker before inspecting the condensing unit, then clear leaves, sticks, or other debris from the condenser fan blade and cabinet. If the air conditioner is still making noise, a worn fan motor bearing is highly likely. With power off, rotate the motor by hand; rough movement or AC fan motor noise usually means the motor needs replacement. Next, check for loose grille or cabinet panels that can vibrate. A loose or damaged condenser fan blade, including a loose set screw or wobbling shaft, can also cause a noisy condenser fan. A second possible source is the condenser fan motor itself if its bearings are worn. If you hear buzzing noise and the unit is not cooling, a defective contactor may be failing. Inspecting or testing the contactor involves dangerous 240V line voltage, so have a qualified HVAC technician handle that work. Enter your Philco model number to find the exact fan motor, fan blade, panel, or contactor for your central air conditioner.
01 - Debris Hitting Fan
Over time debris can fall into the condensing unit, causing a noise when the fan is running. Inspect the fan blade and inside the unit for any debris. Clean out the outdoor unit as needed but be sure to shut off power to the unit before attempting to clean it out.
Top Solution
02 - Philco Central Air Conditioner Fan Motor
The fan motor has bearings that can wear out over time. When the bearings are worn out, they make loud noise. To check the bearings, try rotating the fan motor by hand. If the motor does not turn smoothly, replace it.
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Highly Likely
03 - Panels Vibrating
If the outdoor condensing unit is noisy, the grille or one of the panels may be loose and vibrating. Check for loose panels and tighten them as needed.
Highly Likely
04 - Philco Central Air Conditioner Fan Blade
The fan blade on the condenser fan motor might be defective or loose. To check the fan blade, wiggle the fan motor shaft. If the motor shaft is loose, tighten or replace the set screw. If the condenser fan motor is still making noise, replace the fan blade.
Less Common
05 - Philco Central Air Conditioner Condenser Fan Motor
The condenser fan motor has bearings that can wear out over time. When the bearings are worn out, they make loud noise. To check the bearings, try rotating the condenser fan motor by hand. If the motor does not turn smoothly, replace it.
Less Common
06 - Philco 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 will not provide voltage to the condensing unit. In addition, the contactor will make noise when it is defective. If the condensing unit is making noise but not cooling, the contactor has probably failed. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.
Less Common
Frequently Asked Questions
Why is my Philco central AC making a loud noise or rattling sound?
How do I troubleshoot a condenser fan making noise?
Why is my AC making a buzzing noise but not cooling?
How do I find the correct Philco condenser fan motor or fan blade?
When should I call a technician for a noisy central air conditioner?
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