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Tag Archives: Air-conditioning

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How Does a Bad Capacitor Effect Air-Conditioning?

What Are Capacitors?

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One of the key parts of the electrical system in an air conditioner is the capacitors. Without capacitors, the motors that power the compressor and fans would not be able to work. We’ll look a bit closer at what capacitors do and what might go wrong when a capacitor starts to fail.

The aircon capacitor carries out three main functions:

starting the AC motors, facilitating power conditioning and signal processing. Thus, if there is some problem with the capacitor then your Aircon unit wouldn’t be able to function optimally and provide satisfactory cooling. It is often noted that failure of capacitors result in breakdown of the air conditioners. Thus, if your AC is not working then the first thing which you should check is the capacitor because it is most likely to be conked out.

One of the primary reasons for capacitor failure would be running the Aircon for an extended period of time. In a country like Malaysia & Singapore which has a tropical climate, the hot climate and the overheating of the air conditioner can result in blowing up of the capacitor and AC fuses. If you notice that your Aircon produces a humming sound while the fan no longer runs then it is a clear indication that your aircon capacitor has blown up. The best way to tell whether your capacitor is alright or not is to have a professional conduct a checkup. If it has indeed blown up then the professional AirCon servicing expert would replace it.

Problems with Failing Capacitors

Capacitors can sustain damage from excess power and will also wear down to the point where they can no longer hold a charge. As a capacitor begins to fail, you will usually hear a clicking sound from within in the cabinet. Call for repairs right away before one of the motors stops working.

When a run or start capacitor (or both) dies, the motor to which it is attached will still attempt to come on, but hum instead of activating. If this continues, the motor could burn out and require a full replacement.

Weakening capacitors connected to the compressor will lead to a condition called “hard starting,” where the Aircon will struggle to turn on and then shut off again soon after. This places immense strain on the compressor and the other parts of the Aircon, and the system will need professional attention immediately.

In most cases, professionals will replace the capacitors that are risking the operation of the air conditioner. You should never attempt to do the replacement on your own, since the oil that leaks from broken and damaged capacitors is often dangerous to handle.

Although the electrical system needs the most repairs of any part of an air conditioner, you can still prevent most of these repairs through a system of regular maintenance.

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A tip here for AirCon owners: 

Maintain your Aircon well to protect the capacitor and to prolong the lifespan of the Aircon unit. Keep in mind that your air conditioner is working extra hard in order to keep your room cool. The all year round tropical climate of Malaysia combined with the heat generated by the hard working motors can make it really difficult for the aircon capacitor to ‘keep its cool’, which is why it breaks down. Thus, it is advisable to not have the AC running for an extended period of time. You can switch it off when you reach a comfortable temperature, the room will stay cool for a while and then you’ll need to have the AC switched on again.

It is also advisable to engage in regular care and maintenance for your air conditioner. First and foremost, you should keep the AC coils and the air filters clean so that it would preserve the AC and the aircon capacitor of course. When you take good care of your AC, it would thank you back!

Article from : Abosulte Aircon & Foss Heating & Cooling
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What is R-32 The Next Generation Refrigerant!

 

What’s R-32?
R-32 is a next generation refrigerant that efficiently carries heat and has lower environmental impact.

 

 

Refrigerant is a medium for conveying heat.

Air conditioners transfer heat while circulating refrigerant between the indoor and outdoor units.

Although there are various types of refrigerants, R-32 is a new refrigerant currently receiving the most interest.
Because R-32 efficiently conveys heat, it can reduce electricity consumption up to approximately 10% compared to that of air conditioners using refrigerant R-22. Furthermore, compared to the refrigerants widely used today such as R-22 and R-410A, R-32 has a global warming potential (GWP) that is one-third lower and is remarkable for its low environmental impact.

  • *Source:
    Values for 100 year global warming potential (GWP) from IPCC Fourth Assessment Report. Comparative 100 year GWP: HFC410A, 2,090; HFC32, 675.

As the only manufacturer that develops and manufactures both air conditioners and refrigerants, Daikin launched the world’s first residential-use air conditioner
using R-32.

Refrigerant Trends

Various refrigerants have been used in air conditioners until now. Regulations have increasingly become stricter from greater consideration for the global environment because of the Montreal Protocol in 1987 and the Kyoto Protocol in 1997, resulting in a shift to refrigerants with even lower environmental impact.

Although the mainstream refrigerant R-410A has an ozone depletion potential (ODP) of 0, its global warming potential (GWP) still remains an issue.

While R-32 also has an ozone depletion potential of 0, the refrigerant has only approximately 1/3 of the GWP of R-410A. Consequently, investigation of this promising next generation refrigerant has increased.

However, because R-32 had been an extremely difficult refrigerant to handle, its use was not practical until now. Daikin became the world’s first company to succeed in applying R-32 to air conditioners by leveraging its expertise as the only manufacturer that develops and manufactures both air conditioners and refrigerants.

Currently, R-410A is the refrigerant most commonly used in developed countries. However, if all R-410A were converted to R-32, the impact to global warming from HFCs in 2030 would be reduced by the CO2equivalent of approximately 800 million tons (19%) compared to the continued use of R-410A.*2

  • *1)
    Values for 100 year global warming potential (GWP) from IPCC Fourth Assessment Report. Comparative 100 year GWP: HFC410A, 2,090; HFC32, 675.
  • *2)
    Daikin calculations based on thesis, Velders et al, PNAS (2009), World Meteorological Organization (WMO) library

Cooperation with governments and international organizations has expanded technical assistance for emerging countries to each region and aims for widespread use of the refrigerant R-32 throughout the world.

Aiming for widespread use throughout the world, Daikin not only manufactures and sells R-32, but it also provides technical assistance in emerging countries in cooperation with governments and international organizations.
In India, verification tests were conducted for inverter type R-32 air conditioners. In executing training for the proper handling of R-32, the technical level also improved. Consequently, Daikin has received requests from various governments, including the Thai and Malaysian governments, and the company is beginning to target local manufacturers for technical assistance for conversion to R-32.
Such efforts as those mentioned above have earned Daikin high acclaim and a variety of awards.