Air Cooler
By on May 13th, 2025 in Air Coolers

5 Common Air Coolers Problems and How to Fix Them

Fixing the Most Common Problems in Your Air Cooler

When the sweltering summer heat hits, air coolers become a lifesaver in many Indian homes and commercial spaces. Especially in places like Indore, where temperatures soar, reliable cooling is essential. Sunny Coolers have become a trusted name in delivering efficient and affordable cooling solutions. However, like any appliance, even the best air coolers may encounter occasional issues.

In this blog, we’ll explore five common cooler problems and provide easy, actionable fixes to keep your cooler in top shape. Whether you’re using a desert cooler, swamp cooler, or a commercial air cooler, these tips apply to most models.

1. Cooler Not Blowing Cold Air

Problem: One of the most frequent complaints is that the cooler is running, but it doesn’t blow cool air.

Possible Causes:

  • Dry or worn-out cooling pads
  • Low water level
  • Clogged water distribution system
  • Poor air circulation

Fixes:

Check the cooling pads: Over time, pads can get clogged with dust and debris. If they appear dry or thin, replace them.

Maintain water levels: Ensure the water tank is adequately filled. For automatic models, check the water supply connection.

Clean the water pump and pipes: A blocked pump won’t distribute water properly to the pads. Use a soft brush and clean water to remove any scale or dirt.

Improve ventilation: Make sure the cooler is placed near an open window or door to allow proper airflow.

Pro Tip: Sunny Coolers come with high-grade pads that are designed for better water retention and cooling efficiency. Replacing pads every season ensures optimal performance.

2. Water Leaking from the Cooler

Problem: Water starts leaking from the base or body of the cooler.

Possible Causes:

  • Overfilled water tank
  • Cracks in the water tank
  • Loose drainage cap or pipe
  • Faulty float valve (in automatic models)

Fixes:

Avoid overfilling: Always monitor the water level. Overfilling leads to overflow and leakage.

Inspect the tank for cracks: If cracks are visible, seal them using a waterproof adhesive or epoxy resin.

Tighten the drain plug: Ensure the drain cap is secured properly. Replace it if it’s worn out.

Check the float valve: In auto-fill coolers, a faulty float valve might not shut off the water supply. Replace it with a compatible one if needed.

Note: Regular maintenance can prevent leakage issues. Sunny Coolers are built with durable tanks, but periodic checks are still recommended.

3. Strange Odors from the Cooler

Problem: The cooler emits a musty or foul smell when switched on.

Possible Causes:

  • Mold or mildew in the cooling pads
  • Stagnant water in the tank
  • Dust buildup inside the unit

Fixes:

Clean or replace cooling pads: Pads should be replaced every 3-6 months or cleaned regularly with a mild detergent.

Empty and clean the water tank: Avoid leaving water in the tank for long periods. Clean it weekly during peak usage months.

Use cooler disinfectants: Add a few drops of a cooler cleaning solution or white vinegar to the tank occasionally.

Keep it dry when not in use: Before storing your cooler for the off-season, ensure it is thoroughly dry and cleaned.

Quick Tip: To prevent future odors, add a capful of antiseptic solution to the water once a week.

4. Noisy Operation

Problem: The air coolers makes unusual noises while running, such as rattling, buzzing, or humming.

Possible Causes:

  • Loose fan blades or motor components
  • Debris in the fan area
  • Worn-out motor bearings
  • Improper cooler placement

Fixes:

Check fan alignment: Make sure the fan blades are aligned and not hitting any internal parts.

Tighten loose parts: Open the unit and check for any screws or nuts that may have come loose.

Clean internal components: Remove any debris, insects, or dust that may have collected near the fan or motor.

Lubricate the motor: If the motor bearings are dry, apply a few drops of machine oil to reduce friction.

Stabilize the cooler: Ensure it is placed on a flat, even surface to reduce vibrations.

Maintenance Tip: Sunny Coolers are built with low-noise technology, but regular servicing helps keep them whisper-quiet.

5. Water Pump Not Working

Problem: The cooler fan runs, but the pads stay dry, indicating the water pump isn’t functioning.

Possible Causes:

  • Burnt or faulty pump motor
  • Blocked pump inlet
  • Electrical issues or loose wiring
  • Pump not receiving power

Fixes:

Inspect power supply: Make sure the pump is getting power. Check the socket and internal wiring.

Clean the pump: Sediment or scale buildup can block the inlet. Soak the pump in vinegar if scale is heavy.

Test with direct power: Disconnect the pump and test it separately to determine if it’s working.

Replace the pump: If the motor has burnt out or isn’t responsive, it’s best to install a new compatible unit.

Pro Tip: Sunny Coolers use high-performance pumps, but hard water can cause mineral buildup. Use clean or filtered water to prolong pump life.

Final Thoughts

Regular care and timely maintenance can go a long way in extending the lifespan of your air coolers. Most issues are simple enough to fix at home with basic tools and a little effort. However, if you’re unsure or the problem persists, it’s always better to consult a professional technician or contact your cooler brand’s service center.

Why Choose Sunny Coolers?

  • Durable and weather-resistant body
  • High-efficiency honeycomb cooling pads
  • Low power consumption
  • Designed for Indian summers

Need help or a replacement part? Reach out to Sunny Coolers today and keep your summers breezy and hassle-free.

For more expert cooling tips, maintenance hacks, and the latest updates on our air coolers, follow Sunny Coolers on social media.

FAQs

1. How often should I change my cooler’s pads?
Typically, every 3 to 6 months, depending on usage and water quality.

2. Why is my cooler making a humming noise?
It could be due to loose parts, misaligned fan blades, or motor bearing issues.

3. Can I use my air cooler with hard water?
Yes, but it’s better to use clean or filtered water to prevent scaling and pump damage.

4. How do I prevent algae buildup in my cooler tank?
Regularly clean the tank and use antiseptic or cooler cleaning solutions weekly.

5. What is the ideal placement for an air cooler?
Place it near a window or door for proper air circulation and better cooling efficiency.

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