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Aircon Sensor Not Working? Signs and Fixes

Overview: A faulty aircon sensor disrupts cooling efficiency, raises energy bills, and shortens appliance life. Recognising signs early and applying the right fixes can save money, improve comfort, and avoid long-term damage. This blog explains symptoms, solutions, preventive measures, and financing options for affordable air conditioner repairs or replacements.

Why Aircon Sensors Matter

Air conditioners in Indian households and offices operate under intense conditions, especially during long summers where temperatures can cross 40°C. The sensor inside an AC plays a crucial role in detecting ambient temperature and directing the system to cool efficiently.

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If the aircon sensor is not working correctly, the cooling becomes irregular, electricity bills rise, and the system may even shut down prematurely. In India, where air conditioner usage has grown to over 15 million units annually, such malfunctions are both common and costly to ignore.

Signs Your Aircon Sensor Is Not Working

Spotting problems early helps avoid expensive repairs. Common indicators include:

  • Inconsistent Cooling: The AC may overcool or fail to maintain the set temperature.
  • Frequent On/Off Cycles: A failing sensor sends wrong signals, making the system cycle unnecessarily.
  • Unresponsive Controls: Adjusting temperature on the remote has little effect.
  • AC Runs Continuously: Even after desired cooling, the AC refuses to shut down.
  • Error Codes: Some models flash error signals when sensors malfunction.

Mistakes to Avoid: Ignoring minor cooling issues often leads to bigger and costlier sensor damage.

Common Causes of Sensor Malfunctions

Several factors contribute to sensor failure:

  • Dust and Dirt Build-Up: Indian cities have high dust levels, which can block sensors.
  • Wire Damage: Loose or corroded wiring disturbs sensor function.
  • Improper Placement: A sensor knocked out of position reads temperatures incorrectly.
  • Wear and Tear: Ageing AC units naturally suffer from failing sensors.

Fixes for the Aircon Sensor Not Working Issue

If you notice the aircon sensor not working, the right fix depends on whether it’s a simple adjustment or a more serious fault.

Problem DIY Fix Professional Solution
Dust on sensor Clean gently with a soft cloth Deep cleaning during routine servicing
Misaligned sensor Reposition carefully near evaporator coil Ensure optimal placement & wiring adjustments
Loose connections Check visible wiring and tighten safely Full inspection and rewiring if needed
Completely failed sensor Replace with original part (₹800–₹2,500 typical)

When Replacement Is a Better Choice

Sometimes, repairing an old air conditioner repeatedly costs more than replacing it. If your AC is over 8 years old, consumes excess electricity, or frequently shows the “aircon sensor not working” problem, investing in a new unit is more practical. Modern air conditioners are energy-efficient and come with advanced features such as inverter technology, which lowers electricity bills.

Important to Know: Replacing old ACs can reduce household energy costs by 20–30% annually.

The Cost Angle: Repairs and Replacements

In India, repairing an aircon sensor may cost between ₹800–₹2,500, depending on model and brand. Full replacement of an indoor unit can go beyond ₹25,000, while a new split AC may cost ₹30,000–₹55,000. Such costs can burden households, especially during peak summers when breakdowns are sudden.

This is where financing options such as the Airtel Bajaj Finserv Insta EMI Card make sense. With a pre-qualified loan offer amount of up to Rs. 3,00,000, households can easily manage AC repairs or buy new units without heavy upfront spending.

For families, this EMI option also makes it easier to buy a refrigerator, washing machine, or even upgrade to a new smart TV when needed.

Benefits of Easy EMI Options for AC Repairs or Purchases

Financing an AC repair or replacement with an EMI card is practical:

  • Loan offer amount flexibility – choose financing based on need.
  • Easy EMI option – spread costs into manageable payments.
  • Zero down payment – reduces initial financial burden.
  • Wide Acceptance – usable across partner electronics retailers and service providers.

With this same facility, you can upgrade your workstation, invest in health, or even bring the cinema home affordably.

Preventive Measures for Long-Term Sensor Health

Maintaining your AC sensor prolongs appliance life. Follow these steps:

  • Schedule professional servicing twice a year.
  • Keep filters and coils dust-free.
  • Ensure stable power supply with a surge protector.
  • Avoid setting extreme temperature fluctuations.
  • Do not ignore early signs of irregular cooling.

Final Thoughts: Keep Cool Without the Worry

An air conditioner with a failing sensor not only affects comfort but also drains energy and raises costs. By recognising signs like inconsistent cooling, frequent cycles, or the dreaded aircon sensor not working issue, households can act early—choosing between DIY fixes, professional servicing, or even upgrading to a new unit.

For managing the expense, the Airtel Bajaj Finserv Insta EMI Card offers a smart solution with easy EMI and zero down payment, making aircon repairs or replacements affordable without financial stress.

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FAQs

1. What are the signs of the aircon sensor not working issue?

Common signs include fluctuating temperatures, frequent on-off cycles, unresponsive remote controls, or the AC running continuously without reaching the desired setting. Some models may even display error codes. Addressing these early indicators helps prevent long-term system strain, higher energy bills, and costly breakdowns during peak summer months in India.

2. Can I fix a faulty AC sensor myself?

Yes, minor fixes like cleaning dust or repositioning a misaligned sensor can be attempted at home. However, wiring faults or complete sensor failure require professional help. Attempting complicated repairs without expertise may cause further damage to the unit, leading to additional expenses and loss of warranty coverage.

3. How much does repairing an AC sensor cost in India?

The cost of repairing or replacing a faulty AC sensor in India usually ranges between ₹800 and ₹2,500 depending on the brand and model. Regular servicing and timely maintenance can reduce such expenses significantly, helping homeowners manage both appliance longevity and cooling efficiency in a cost-effective manner.

4. When should I replace my AC instead of repairing the sensor?

If the unit is over 8 years old, requires frequent repairs, consumes excess power, or repeatedly faces the aircon sensor not working issue, replacement becomes more practical. Newer models are energy-efficient, quieter, and often come with better warranties, saving households money over the long run while improving comfort.

5. How can I prevent AC sensor problems in the future?

Preventive care includes cleaning filters and coils regularly, scheduling professional servicing twice a year, and protecting the unit from power surges. Avoiding extreme thermostat settings also reduces strain. Early attention to unusual cooling behaviour ensures that small issues don’t escalate into costly aircon sensor not working issue repairs.

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