Why does my car AC blower continues to run?
The fan is switched to “on” rather than “auto.” When the fan is switched to the “on” position, it will run continuously. It should be set to the “auto” position, so it only runs when the air conditioner is running. AC is too small for the property or can’t keep up with extreme temperatures.
What causes a blower motor to keep running?
You’re using the wrong thermostat fan setting. Your fan limit switch is on “manual override” There’s a shorted thermostat wire. There’s a shorted wire at the fan limit switch.
Why is my AC not turning off in my car?
The most common reason that your Air Conditioner fan won’t turn off is because a stuck relay keeping the circuit closed. If it’s not the relay, your thermostat likely has a shorted cable or needs to be replaced.
Why is my AC fan still running?
AC Unit Is Too Small Or Unable To Match Settings A too-small HVAC system will often run to keep up with the thermostat setting, leading the fan and blower to run consistently. This means that the entire system, including the fan, will run longer than usual to attain the set temperature.
Why does the blower motor keep running after I Turn Off the car?
Why does the blower motor keep running after I turn off the car? If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles.
Why does my car fan keep running when the car is turned off?
Look in your owners manual. I think it’s primarily for cold weather, it keeps the car interior warm until the heater core completely cools down. Not to say you don’t still have a problem separate from that. It keeps running for hours unless I unplugged the battery or the motor itself. That is the design.
Why is my air handler fan not turning off?
Air Handler Blower FAN WON’T TURN OFF! 5 Reasons Why it Keeps Running! If playback doesn’t begin shortly, try restarting your device.
Why does my AC fan keep running when the thermostat is off?
Usually when the relay switch is broken, the fan will continue to run by itself. This happens because there’s no communication between the thermostat and the blower fan. Now, if it’s a short circuit, both the ‘on’ and ‘off’ commands you enter typically won’t get sent to the blower fan.