Brazil. The recent low temperatures, considered the longest in the last eleven years, have generated discontent among users for the operation of split air conditioners; situation that motivated the officials of the Association of Refrigeration, Air Conditioning, Heating and Ventilation of southern Brazil (ASBRAV) to pronounce themselves.
According to the vice president of the association, César Augusto Jardim De Santi, one of the main reasons for these difficulties is that the devices are poorly installed or are of insufficient power to cover the space. "Many times the load needed for the environment is wrong, that is, the volume being greater than the heating or cooling capacity of the equipment makes the split not work."
In addition, in order for rapid warming to occur, people program very high temperatures, above 30°. "It's a mistake to want too hot or too cold. The recommended average temperature is between 22° and 23°C to avoid thermal shocks. On colder days you can accelerate the acclimatization process by bringing the maximum temperature up to 27°C but then it must be reduced to 22° or 23°C".
In the same way, argues the president of ASBRAV, Luiz Afonso Dias: "Due to such low temperatures, the equipment stops the heat for a few minutes and goes into thawing mode, delaying the return of hot air. When this happens the user turns off the equipment and believes that a defect occurred, which stops the operation of the defrost sensor and delays the defrosting process much longer.
Finally, Dias adds, that the purchase of the product must also be done correctly. "For efficient operation in the winter the device must contain a technology called 'Inverter', which incorporates the 'hot' and 'cold' circuits and has the ability to quickly reach the desired temperatures."
