AC Not Working?

What are the reasons behind “AC not cooling” problem?

Here, we have prepared a list of some of the most common problems Indian families experience with their AC, and even a few solutions you can try before you call for a repair person. Most wall or central AC units are quite sturdy, and good for years or even decades of service. If it simply fails to turn on one day, the first thing you should check is the fuse or circuit breaker that supplies the unit. If the fuse is blown or the breaker is tripped, you have probably found the trouble. AC’s can draw a lot of power, and if other appliances are running on the same circuit, the fuses or breakers are set to shut the circuit down before the wires can overheat and start a fire.

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Your air conditioner repair in 4 simple steps

1. Schedule and book your air conditioner service by call or online.

2. A trained and certified ac technician will come to your address.

3. If possible, the specialist will fix the problem on the very same day.

4. He will troubleshoot your air conditioner to ensure it’s working properly.

AC PCB Repair Chennai

Expert Inverter AC PCB Repair Services in Chennai

Inverter AC PCB repair refers to the process of repairing or replacing the printed circuit board (PCB) in an inverter air conditioning unit. The PCB is the central control unit of the AC, responsible for controlling and monitoring the various components of the unit.

Diagnosis and Solutions for Optimal Performance

If you suspect that your inverter AC PCB is in need of repair, it is important to contact a professional technician for diagnosis and repair. We will be able to determine the specific cause of the problem and determine the best course of action for repair. Some repairs may be done on-site, while others may require the PCB to be removed and repaired at a specialized facility.

Common Causes of PCB Failure

There are several reasons why an AC's PCB may fail. Some of the most common causes include:

Overheating: If the AC unit is not adequately ventilated, the PCB can overheat, causing damage to the electronic components.

Power surge: A power surge can damage the PCB, causing it to malfunction.

Moisture: Moisture can cause corrosion of the PCB, leading to short circuits and other problems.

Age: Over time, the electronic components on the PCB can wear out, causing the unit to malfunction.

When a PCB becomes damaged, it is important to have it repaired as soon as possible. A damaged PCB can not only cause your AC to stop working, but it can also cause damage to other parts of the unit. In some cases, a damaged PCB can even be a fire hazard.

To repair a damaged PCB, a technician will first diagnose the problem to determine the extent of the damage. This may involve using specialized tools and equipment to test the board and identify any issues. Once the problem has been identified, the technician will then repair or replace any damaged components. This may involve replacing a damaged component, such as a resistor or capacitor, or even replacing the entire PCB if necessary.

Common AC Problems

Clogged air filter: If the AC does not cool, the air filter might be clogged. In such case, air cannot flow through properly which greatly reduces the cooling capacity of the AC. If you find that the air filter of your AC is dust coated, clean the air filter with soft brush under running water.

Dirty coils: If the AC stops cooling then condenser coils of the AC may be dirty and loaded with debris. In an air conditioner, the condenser is like a radiator that dissipates heat (which was removed from the air). The condenser coil must be clean to dissipate heat outside. As the coils get dirtier the AC becomes less efficient, which makes it work harder to cool the room. If the coils are dirty enough, the unit will never be cold enough and will not be able to cool the room.

Insufficient coolant: Lack of coolant is a very common reason behind AC not cooling problem. The coolant circulates through the evaporator coils and cools the air flowing over it and eventually sends cool air into the room. So when the level of this coolant becomes insufficient, the AC fails to cool. In many cases the coolant leaks from the unit and AC stops cooling.

Faulty compressor: A compressor is the heart of an air conditioning unit which is responsible for cooling your room. If the AC does not cool, the compressor might be defective. The compressor is a motor which compresses the refrigerant or coolant and circulates the refrigerant through the evaporator and condenser coils. If the compressor goes bad the cooling cycle does not start and the AC fails to cool.

Faulty thermostat: A thermostat is a sensor that senses the room temperature and hints the compressor to start or stop the cooling cycle. If the thermostat is defective the AC does not cool or may cool continuously.

The wring size of air conditioner could be the real problem

Defective parts: The other possible technical reasons behind AC not cooling can be a faulty run capacitor of the compressor, defective control board, bad thermistor, choked capillary, faulty motor, bad compressor valve etc.

High atmospheric temperature: An AC has an optimum operating temperature (surrounding temperature) at which it can work most effectively. If the temperature shoots up beyond the optimum temperature limit, the efficiency of the AC goes down. Sometime it is so hot outside that a stage is reached where the compressor stops working completely.

Undersized AC: A common mistake people make is that they buy an AC based on their budget and not based on the requirement of the room. A small AC in a huge room will always find hard to cool the room in peak summers. The size of the AC should be according to the size of the room.

Poor or infrequent maintenance: Failing to clean or replace filters, or allowing the evaporator or condenser coils to become dirty can lead to poor performance, and even contribute to the premature failure of your air handling unit or compressor fan. Clean the filters monthly during hot weather, and the coils at least once a season for best effect.