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 HelpPhilco Central A/C RepairPhilco Central air conditioner coil icing up Repair
Philco Central air conditioner coil icing up
If your Philco central air conditioner coil is icing up, the evaporator coil is freezing because airflow or refrigerant control is out of balance. First, check whether the humidifier damper is open and set it to summer mode or the closed position, since bypassed air can cause the coil to freeze. Next, inspect the blower motor in the furnace or air handler. A seized motor, failed bearings, or no power to the motor can stop air circulation. A clogged or damaged blower wheel and housing is another common cause of weak airflow and a frozen evaporator coil. The run capacitor or blower capacitor may also be defective if the blower motor will not start. A failed thermal expansion valve, or TXV, can improperly regulate refrigerant and cause the evaporator coil to ice over. Turn off power before inspecting components, and use caution around 240-volt wiring. Testing or replacing a capacitor may require electrical expertise. TXV, refrigerant, and other sealed-system repairs require an EPA 608-certified HVAC technician. Enter your Philco model number to find the exact replacement blower motor, blower wheel, capacitor, or other part for your central air conditioner.
01 - Humidifier Damper is Open
An open humidifier damper will let air bypass the evaporator coil. This loss of air flow can cause the evaporator coil to freeze up. If you have a humidifier on your furnace or air handler, confirm the humidifer damper is in the "summer mode" or closed position.
Highly Likely
02 - Philco Central Air Conditioner Blower Motor
Since the furnace or air handler blower motor is the component that circulates the air through unit to cool it, a defective blower motor could result in the evaporator coil icing up. You can use a multimeter to test the blower motor for electrical continuity, a continuous electrical path present in the motor, as well as determine if power is reaching the motor. You can also try turning the blower wheel by hand. If the wheel does not turn freely, it's likely the motor bearings have seized and the blower motor will need to be replaced.
Enter model number to search for the required part specific to your product
Highly Likely
03 - Philco Central Air Conditioner Blower Wheel and Housing
Over time the blower wheel and housing can become clogged with dust and debris. This will restrict the air flow which could result in the evaporator coil icing up. You can try cleaning the blower wheel with compressed air or with a soft bristle brush. Use caution when trying to clean the blower wheel as the fins are sharp and can be easily damaged. If the blower is damaged it will need to be replaced.
Common
04 - Philco Central Air Conditioner Run Capacitor
If the run capacitor is defective, the blower fan motor may fail to run which could result in the evaporator coil icing up. 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.
Common
05 - Philco Central Air Conditioner Capacitor
If the capacitor is defective, the blower fan motor may fail to run which could result in the evaporator coil icing up. 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.
Common
06 - Philco Central Air Conditioner Thermal Expansion Valve
A thermal expansion valve, commonly referred to as a TXV, regulates the amount of refrigerant in the evaporator coil to help maintain an optimal working temperature.
Common
Frequently Asked Questions
Why is my Philco central air conditioner coil freezing up?
Can a bad blower motor or dirty blower wheel cause an AC coil to freeze?
How do I test the run capacitor when my air conditioner coil is icing up?
Could a TXV or refrigerant problem cause a frozen Philco evaporator coil?
How do I find the correct Philco replacement part for my central air conditioner?
Shop by Philco 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