AC Repair and Service centre in Coimbatore
                     COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
There’s nothing worse than your AC breaking down on a scorching 
hot day. Whether your air conditioner is blowing warm air, making 
strange noises, or not working at all, you don’t always need a 
technician right away. In many cases, you can troubleshoot and 
fix common AC issues yourself—saving time, money, and 
frustration.
This guide will walk you through top AC troubleshooting and 
maintenance tips to keep your cooling system running smoothly 
all year long.
AC Service in Coimbatore
1. AC Not Cooling? Check These First!
If your AC is running but not cooling the room properly, try 
these quick fixes:
✅ Check the Thermostat
Ensure it’s set to cool mode and not on “fan” or “heat.”
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If it’s unresponsive, replace the batteries (if applicable).
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COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
✅ Inspect the Air Filter
A dirty or clogged air filter can block airflow, reducing cooling 
efficiency.
Solution: Clean or replace the filter every 1-3 months, especially 
during peak summer use.
✅ Look for Blocked Vents
Ensure furniture or curtains aren’t blocking the air vents.
Clean the vent openings to allow unrestricted airflow.
✅ Check the Outdoor Unit
The condenser unit (outdoor AC unit) can get clogged with dirt, 
leaves, or debris.
Solution: Clean it with a gentle water spray (avoid high pressure) 
and remove obstructions.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
2. AC Not Turning On? Here’s What to Do
If your AC won’t start at all, don’t panic! Try these troubleshooting 
steps:
✅ Check the Power Supply
Ensure the circuit breaker hasn’t tripped. Reset it if necessary.
Check if the AC power cord is plugged in properly.
✅ Inspect the Thermostat
If the thermostat batteries are dead, the AC won’t receive the 
cooling command.
Try replacing the batteries and restarting the system.
✅ Examine the Drain Line
A clogged drain line can trigger an automatic shutoff.
Solution: Use a vacuum or a pipe cleaner to remove blockages in the 
drain.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC TROUBLESHOOTING & 
MAINTENANCE TIPS
3. Strange Noises? What They Mean & How to Fix Them
If your AC is making unusual noises, it’s trying to tell you something. Here’s 
what different sounds mean:
✅ Rattling or Banging
Likely due to loose screws, fan blades, or debris in the unit.
Fix: Turn off the AC and tighten any loose parts.
✅ Buzzing or Humming
Could indicate electrical issues or a faulty capacitor.
Fix: If buzzing persists, call a technician.
✅ Hissing or Whistling
A sign of a refrigerant leak or air duct problem.
Fix: If you suspect a refrigerant leak, contact a professional for repairs.
✅ Clicking Sounds
Normal when turning on/off but continuous clicking might indicate a relay 
issue.
Fix: Call a technician if clicking is constant.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
4. Musty or Bad Smell? Fix It Now!
Unpleasant odors coming from your AC could be due to:
✅ Burning Smell
Could indicate an electrical issue or overheating motor.
Fix: Turn off the AC immediately and call a technician.
✅ Musty or Moldy Smell
This usually means there’s mold or mildew growth in the unit or 
ductwork.
Fix: Clean the air filter, drain line, and evaporator coils. Consider 
using AC disinfectant spray.
✅ Rotten Egg Smell
If you smell gas or rotten eggs, you might have a gas leak (in systems 
connected to gas heating).
Fix: Turn off the unit, leave the area, and call a professional immediately.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC 
TROUBLESHOOTING & MAINTENANCE TIPS
5. Essential AC Maintenance Tips for Smooth Cooling
Preventive maintenance extends the lifespan of your AC and 
improves efficiency. Here are key maintenance tips:
✅ 1. Clean or Replace Air Filters Regularly
Dirty filters block airflow, making your AC work harder and increasing 
energy bills.
Replace or clean filters every 1-3 months.
 2. Keep the Outdoor Unit Clean
Remove leaves, dirt, and debris from around the condenser unit.
Spray it down with a hose every few months to keep it running 
efficiently.
 3. Check for Leaks & Drain Blockages
A clogged drain line can lead to water damage and humidity 
problems.
Use a vacuum or pipe cleaner to clear blockages every few months.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC TROUBLESHOOTING & 
MAINTENANCE TIPS
 4. Inspect Refrigerant Levels
Low refrigerant means your AC won’t cool properly.
If you notice weak cooling, ice buildup, or hissing sounds, call a 
professional to check for leaks.
 5. Schedule an Annual AC Tune-Up
Having a professional service your AC once a year helps identify 
issues before they become costly problems.
When to Call a Professional?
While DIY troubleshooting helps solve minor AC problems, some issues 
require professional help. Call an HVAC expert if:
✅ Your AC still doesn’t cool after troubleshooting.
✅You suspect a refrigerant leak.
✅There’s a burning smell or electrical problem.
✅The unit is leaking water excessively.
✅Strangenoises persist even after cleaning and tightening parts.
Contact us : 9944817412 / 9943893668
https://www.hapserv.com/
COOL AIR, NO STRESS! TOP AC TROUBLESHOOTING & 
MAINTENANCE TIPS
✅AC Service in Coimbatore
Final Thoughts: Stay Cool & Stress-Free!
A well-maintained AC means cool air, fewer breakdowns, and lower 
energy bills. By following these troubleshooting and maintenance 
tips, you can keep your AC running smoothly and avoid costly repairs.
Remember, regular care and quick troubleshooting can extend your 
AC’s lifespan and keep your home comfortable all year round!
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Contact us : 9944817412 / 9943893668
https://www.hapserv.com/