Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. Symptoms of a Bad or Failing Condenser Fan Relay

Symptoms of a Bad or Failing Condenser Fan Relay

condenser fan relay

The condenser fan relay is the electronic relay that controls the power to the AC condenser cooling fan. When the relay is activated the AC condenser fan is switched on so that it can keep the AC condenser cool. The AC condenser is designed to cool down and condense incoming refrigerant vapor into cooled liquid and uses the fan to help keep it cool. The fan's power is controlled by the condenser fan relay. Usually a faulty condenser relay will display a few problems that can alert the driver that a potential problem has occurred and should be serviced.

AC blows hot air

One of the first symptoms commonly associated with a fan relay is an AC that blows warm air. If the AC condenser fan relay fails, the AC condenser fan will not receive power and will not be able to cool the AC condenser. This may lead to a condenser that runs too hot and cannot cool the refrigerant enough for the AC to blow cold air.

Engine overheating

Engine overheating is another symptom of a potential problem with the condenser fan relay. The AC condenser serves as the heatsink for the AC system, and can get overheated quickly, especially on hot days. If the condenser fan relay fails and the disables the AC condenser fan, the condenser will not have any means to keep itself cool and can overheat. In severe cases, the overheating can spread to other parts of the vehicle and cause the engine to overheat, putting the engine and AC components at risk of damage.

The condenser fan relay is a simple relay, however, it plays a vital role in the proper operation of the AC system. If you suspect that your condenser relay may be having a problem, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the car needs to have the condenser fan relay replaced.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...


Related questions

Q: Brand new battery but my car won't start.

Hi there, thanks for writing in. If your 2010 HHR is having problems not cranking, but you just replaced the battery, then it's highly likely that you have a broken starter or damaged electrical relay somewhere. When the vehicle shuts...

Q: Heater not blowing hot air, only warm.

The most common causes of poor or no heat conditions would be (but not limited to) low coolant level, a restriction in the cooling system, faulty blend door actuator, or faulty heater control valve. I would recommend having the cooling...

Q: car runs hot at red lights

Hey there, thanks for writing in about your 2005 Chevrolet Impala. You need to verify the cooling fan is cycling on to control the temperature of the engine. The fan motor may not be coming on. Have a mechanic diagnose...