Why is My AC Running but Not Cooling, So How Do I Fix It?

In this blog, we will discuss the topic of why is my AC running but not cooling and how do you can fix AC issues. In a properly working air-conditioner, the fan will pull air from the evaporator coils and then circulate back in the room.

If the filter is clogged, then also your ac might not work efficiently and will restrict the airflow.

This will result in no air being circulated in the room. 

It is necessary to clean the filter as often as possible. If the evaporator coils are dirty then you need to clean it with detergent and brush.

Here, Doorstephomerepairs has mentioned in detail reasons and solution of why you’re AC doesn’t blow cold air and if you want to know more about other AC issues and solution or need doorstep service of ac repair in Noida then you can visit our website.

Fan Motor

1. If the air conditioner doesn’t blow cold air, the problem can be a fan or a fan motor.
2. In an efficiently working air-conditioner, the fan will draw air from the evaporator coils and re-circulate the air back into the room.
3. If the circulating fan is too slow, no air will be passed through the evaporator coils and this makes the ac to freeze and restrict the airflow further. 
4. Fan and motor need to be removed to carry on the check it. The technicians will monitor the fan motor and ensure that the fan motor blades are not damaged when seizing it off.
5. If the motor is damaged, it needs to be replaced.
6. If the motor moves easily, it may be defective. The technician will perform certain tests and will check the hidden reason behind it.

Temperature Control

1.  If the air-conditioner is not blowing air and you have inspected the clogged filter and fan motor and have found them okay, then there may be a problem of temperature control or it could be due to the faulty thermostat.
2. This is the device that monitors the incoming air and turns off the compressor.
3. There is a bulb attached to it and it will extend to the evaporator coil and electrical circuits that supply power. 
4. The bulb will monitor the room temperature and will indicate the thermostat the compressor to turn on if the set temperature is lower than the room temperature.
5.  If the thermostat is defective, it might not send signals to the compressor and hence this might be the reason why the AC is not blowing cold air.
6. The technician will inspect the bulb, or any bend, rupture and replace the same.

Electronic Control Board

1.  If you have checked the filter, motor, thermostat and it is not blowing cold air, then there might be a problem with Control Board, sometimes known as PCB.
2. The control board should work in conjunction with a thermostat that monitors incoming air temperature and switch on and off the compressor depending upon the outside temperature.
3. The thermostat connected to the control board might be defective, it might not send power signals to the compressor, and hence there is no cooling. 
4. The technician will inspect the thermostat and check if there is any damage or corrosion.

Circuit Breaker

1. If the air-conditioner isn’t able to blow cold air, it may be due to the faulty compressor circuit. Most of the air-conditioners use a capacitor to start the compressor.
2. If the capacitor is not able to start the fan, it will blow warm air.
3. Some window air-conditioners work in conjunction with the capacitor and fan motor circuit to blow air. To check this default, you need a qualified person.
4. If the technician asks you to replace the capacitor check the specifications. It should be original.

Thermostat

1.  If the air-conditioner isn’t blowing cold air and you have inspected the filter, fan motor, capacitor, and found them okay, then there may be a problem with the thermostat.
2.  This is a component seen in the electronic control board and it monitors the incoming air temperature and indicates the main control board to switch on and off the compressor.
3. The device is located near the evaporator coil. If you have found a thermostat defective, you need to call the technician.
4.  If it is defective, it will not provide a clear signal to the control board and you won’t be able to turn on the compressor circuit.
5. The professional might ask you to replace the same if he sees any signs of damage or corrosion.

Low Refrigerant Level

1. Contrary to the popular perception, the coolant doesn’t deplete, the reason behind it is refrigerant leakage.
2. Slow leaks in the refrigerant level drops with time and there is a need for proper monitoring.
3. This should be done by the professionals due to the complex nature of the ac and chemicals involved in it.
4. Depending upon the age of the unit and level of technicality, consider updating the ac. An upgrade is a better decision if

•                    The System is more then 10 years old

•                    The System is experiencing a problem

•                    If the cost is too high

If you are still not sure about why the ac is not blowing cold air, you can call and avail custom troubleshooting AC repair services.