Air Conditioner Evaporator Fan Not Working

Also check to make sure that it engages the high speed fan.

Air conditioner evaporator fan not working.

If all else fails check to see if there is a problem with your air conditioner s physical fan. After an extended period of time you fan can break or stop working. Air conditioner fans not working can be a sign of a frozen evaporator coil. I am not a professional my friends ac fan stop working.

If both the compressor and the fan motor won t run use a multimeter to test the temperature control thermostat for continuity. If the control box is working as it should then the motor of the evaporative air cooler may be the problem. Before replacing the board make sure you check more commonly defective parts particularly the fan motor capacitor and the fan motor itself. A filter that s not a proper fit can obstruct airflow and put more stress on your air condition fan.

If the thermostat does not have continuity replace it. Make sure that the power is turned on and that the settings are calling for cooling. If the fan doesn t start up at all it could be something as simple as a setting on the thermostat. If the relay board isn t working properly the fan might not run.

If your ac indoor fan isn t working first check to make sure a breaker hasn t been tripped. Air conditioner fan not working inside. The outdoor system is running however the fan is not. When your air conditioner s outside fan is not working inspect the fan itself.

Central home air conditioner service systems consist of two major components. The evaporator coil sits inside your home within the air handler unit furnace or fan coil pulling heat and humidity from indoor air as it passes through. Any number of things could have gone wrong here but it might be that you have a grubby filter the capacitor is broken a wire burned off the blower motor is broken the fan centre is broken or the evaporator coil is filthy. If it s blocked then you may be able to fix it yourself.

Anatomy of a central home air conditioner. Relay boards are often misdiagnosed. If the compressor is running but the fan motor is not running the fan motor or the fan motor capacitor are likely at fault. A condensing unit that sits outside your house and the evaporator coil often referred to as an a coil that sits in the plenum of your furnace or air handler.

You will probably need to pull your air. If not you will need to replace it with a low voltage motor to work with the control box. If there s ice on the evaporator coil and refrigerant lines allow the ice to melt then check again to see if the fan is working. The relay board provides voltage to many components of the air conditioner including the fan motor.

This is for documentation and reference only. If all the settings are correct but the fan doesn t start it could be an overheated or damaged fan motor.