The need for energy saving in modern home appliances has been on the rise for quite some time. Traditional HVAC relied on a complex system that includes dampers, bypasses, and pumps to maintain efficiency, which does not provide enough as expected. However, with the invention of Variable speed drives, modern appliances can easily maintain their efficiency. Any damage al with such features can incur a lot of expenses. Here are a couple of thoughts for AC drive repair that one can rely on.
What are the functions of HVAC drives? In a layman language, variable frequency drives (VFD) maintain the energy-saving capacity of a unit. In detailed terms, they are responsible for starting the torque which eliminates large current spikes. Therefore, the device varies the speed of the motor based on the demand at hand.
What are the benefits of the drives? There are a few benefits that result from using a VFD. First, they reduce possible inrush when motors are starting up. So, they reduce the level of mechanical stress on the motor, which improves its reliability. These devices also regulate the motor speed electricity and monitor the performance of the whole system.
Possible causes of VFD damage the most common cause of VFD damage is high voltage spikes. However, several other reasons can bring a potential problem. For instance, environmental factors such as dust and moisture can be a significant problem. Also, all sorts of disturbance and interference can be a substantial cause of damage. The VFD itself is a harmonic source that causes problems to the electric circuit.
Before you set yourself into repairing the component, you should consider the DC bus over-voltage sign to determine how much voltage you are feeding to it. For a 200 V class device, the trip point would be 410 V. So, it means that the voltage that is twice its rating can be a cause of the damage. The main aspects to consider in this process the connections, temperature, and controller displays.
So, the most recommendable repair for such a device is determining the amount of voltage that it receives. Ensure that the voltage is within the size indicated on the label. For low voltages requirement, you might require to look for additional motors which can be unreasonable for an HVAC unit. So, the best action is to replace the device with another one with the right rating.
Due to the level of technicality required in repairing such a component, it is best to rely on a professional to get excellent results. Most technicians who have experience in handling HVAC can provide excellent repair services. Inform the expert about the issue at hand if you are confident that the drive is the cause of your faulty HVAC.
Some issues might force you to replace your old component with a new one. In such a case, you should find quality products in the market that matches your air conditioner needs. Even so, your technician should ascertain that the component requires replacement before you decide to replace it to avoid wasting money.