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Reset Your Aircon Unit

How to Reset Your Aircon Unit When It is not Working

The immediate troubleshooting and maintenance that is applicable is to reset aircon unit. In the sweltering heat of summer or the chilly days of winter, a malfunctioning aircon unit can be a major inconvenience. Whether it’s blowing warm air, not turning on at all, or making strange noises, dealing with a faulty aircon unit can leave you feeling frustrated and uncomfortable. 

However, before rushing to call a professional technician, there are steps you can take to troubleshoot and potentially reset your aircon unit. This comprehensive guide will walk you through the process, from identifying the problem to performing maintenance tasks that can help keep your aircon unit running smoothly.

How to Reset Aircon Unit?

Expecting to get chilled air, and get hot blazing bursts from your aircon, or suddenly feeling a strange odor in the environment erupting from the aircon, you need some quick actions. The quickest of the maintenance tasks is to reset air conditioner unit and check if the issue is resolved. 

If you reset AC unit and still the issue persists, you may need to consult experts like Aircon Servicing Singapore. However, this section elaborates on the steps to reset aircon unit, troubleshoot various aircon issues, and present potential solutions to these issues. 

Identifying the Problem

The first step in addressing a malfunctioning aircon unit is to identify the problem. Is it failing to cool the air adequately? Is it not turning on when you adjust the thermostat? Is it emitting strange odors or noises? Understanding the symptoms will help you narrow down the potential causes and determine the appropriate course of action.

Checking the Thermostat

One of the most common issues with aircon units is a malfunctioning thermostat. Start by checking the thermostat settings to ensure it’s set to “cool” mode and that the temperature is set lower than the current room temperature. If your thermostat uses batteries, replace them to rule out power-related issues that could be affecting its functionality.

Inspecting the Circuit Breaker

A tripped circuit breaker can often be the reason why your aircon unit is not working. Locate the circuit breaker that controls your aircon unit and check if it has tripped. If so, reset it by turning it off and then back on. This simple step can restore power to your aircon unit and resolve the issue.

How to Reset Your Aircon Unit

Cleaning or Replacing Air Filters

Dirty or clogged air filters can restrict airflow and reduce the efficiency of your aircon unit. Check the air filters regularly and clean or replace them as needed, ideally every 1-3 months. This maintenance task can improve air quality and prevent potential issues with your aircon unit.

Clearing the Condenser Unit

The condenser unit, typically located outside your home, can become clogged with dirt, leaves, or debris over time. Turn off the unit’s power and carefully remove any obstructions. Use a hose to clean the condenser coils and ensure proper airflow, which is essential for optimal performance.

Resetting the Air Conditioning Unit

After completing the troubleshooting steps mentioned above, it’s time to reset your aircon unit. Follow these steps:

  1. Turn off the aircon at the thermostat and wait for a few minutes.
  2. Locate the power switch on the aircon unit or the circuit breaker panel.
  3. Turn off the power to the aircon unit by flipping the switch or turning off the circuit breaker.
  4. Wait for at least 5-10 minutes to allow the unit to completely power down.
  5. Turn the power back on either at the unit or the circuit breaker panel.
  6. Please turn on the air conditioner at the thermostat and set it to your desired temperature.

Monitoring for Proper Operation

Once you’ve reset your aircon unit, monitor it for proper operation. Check that cool air is flowing from the vents and that the temperature is reaching the set point on the thermostat. Listen for any unusual noises that may indicate ongoing issues with the unit.

Scheduling Professional Inspection if Necessary

If your aircon unit continues to malfunction despite resetting and troubleshooting, it may require professional inspection and repair. Contact a qualified HVAC technician to diagnose and fix any underlying issues that may be affecting the performance of your aircon unit.

Reset Your Air conditioner Unit

Maintenance Tips to Prevent Future Problems

To keep your aircon unit running smoothly and prevent future problems, consider the following maintenance tips:

  • Regularly clean or replace air filters every 1-3 months.
  • Keep the area around the condenser unit clear of debris and vegetation.
  • Schedule annual maintenance checks with a professional HVAC technician.
  • Monitor the thermostat settings and temperature to avoid overworking the unit.


The initial troubleshooting and maintenance step that should be taken is to reset the aircon unit. Following the troubleshooting steps outlined in this guide and performing regular maintenance tasks, you can keep your aircon unit in optimal condition and avoid costly repairs in the long run. 

Remember to identify the problem, check the thermostat and circuit breaker, clean or replace air filters, clean the condenser unit, and reset the aircon unit as needed. With proper care and attention, your aircon unit can provide reliable cooling or heating whenever you need it.

Frequently Asked Questions

The frequent reason an AC unit needs a reset is when the safety circuit breaker within the unit activates. This occurrence is common following a power interruption and serves as a precautionary measure to avert potential fires and explosions.
After you switch your air conditioner back on, its internal circuitry requires some time to reset. This process typically takes around thirty minutes, so it's advisable to wait patiently during this period.
If your AC fails to start, it could be because the compressor is not engaging with the electrical system. Such issues are frequently encountered in digital appliances, which are susceptible to electrical discharges. Utilizing the reset button might resolve the problem following a power outage or an abrupt disconnection.