aircond not cold
It’s a frustrating situation — your living room feels perfectly cool, but one bedroom remains warm and uncomfortable. When an aircon not cold issue happens in only one room, it usually means the problem is isolated to that indoor unit rather than the entire system. Many homeowners immediately worry about compressor failure, but in reality, most causes are much simpler and cheaper to fix.
In Singapore’s humid climate, air conditioners work hard daily, and even a small fault can affect cooling performance. Below are the most common reasons and how letscool aircon and Services Singapore can restore your comfort quickly.
1. Dust-Clogged Fan Coil Restricting Airflow
The most frequent cause of weak cooling in one room is a dirty indoor unit. Over months of usage, dust and mould collect inside the fan coil, blocking cold air from circulating.
Typical symptoms include:
- Weak airflow from the unit
- Musty smell
- Gradual cooling loss
- Occasional aircon water leakage
Daikin Aircon water leaking
Midea Aircon water leaking
Mitsubishi Aircon Water Leaking
Panasonic Aircon Water Leaking
Routine aircon general servicing removes surface dirt, but heavily clogged units require deeper cleaning, like aircon steam wash or aircon chemical wash. If the evaporator coil is extremely dirty, technicians perform an aircon chemical overhaul to dismantle and clean internal components thoroughly.
Regular aircon servicing Singapore prevents this issue from happening again.
2. Refrigerant Leakage in That Specific Room
Many people assume low gas affects all rooms, but multi-split systems use separate pipes for each indoor unit. A leak can occur in only one room, making that aircon blow normal air instead of cold air.
You may notice:
- Cooling is lost in only one room
- Ice forming on pipes
- Hissing noise
- Higher electricity bill
A technician will check the pressure and perform an aircon gas top-up after fixing the leak. Delaying repair can strain the system and eventually require aircon compressor servicing or full aircon repair in Singapore.
3. Drainage Blockage Triggering Safety Sensors
Air conditioners produce condensation. When the drain pipe is clogged, water backs up inside the unit and interferes with cooling.
Warning signs include:
- Indoor dripping or aircon water leakage
- Unit shutting off randomly
- aircon light blinking
- Displayed aircon error code
Daikin Aircon Light blinking
Mitsubishi aircon light blinking
Midea aircon light blinking
Panasonic Aircon Light blinking
Professional aircon servicing Singapore clears the drainage line safely. Without cleaning, water damage can destroy internal electronics and require replacing expensive aircon spare parts.
4. Temperature Sensor or PCB Malfunction
Modern air conditioners rely on sensors to detect room temperature. If a thermistor fails, the unit thinks the room is already cold and stops cooling prematurely.
Common indicators:
- The room never reaches the set temperature
- The compressor turns on and off quickly
- Persistent aircon error code
- aircon light blinking
This problem cannot be solved by cleaning alone. It requires component testing and replacement parts handled by trained experts in the best aircon servicing singapore teams.
Daikin Aircon Service Singapore
Mitsubishi Aircon Service Singapore
Midea Aircon service Singapore
Panasonic Aircon Service Singapore
5. Improper Installation or Piping Design
Sometimes the aircon was never installed correctly. Poor positioning or incorrect piping causes a refrigerant imbalance, affecting only one room.
Installation mistakes may include:
- Excessively long copper piping
- Poor insulation
- Wrong indoor unit angle
- Incorrect BTU capacity
Professional aircon installation Singapore ensures balanced cooling across all rooms. If your problem existed since installation day, technicians may need an adjustment rather than a repair.
Daikin Aircon Installation Singapore
Mitsubishi Aircon Installation Singapore
Midea Aircon Installation Singapore
Panasonic Aircon Installation Singapore
6. Outdoor Compressor Load Distribution Problem
In multi-split systems, one outdoor unit distributes cooling power across multiple rooms. When filters clog or gas pressure becomes uneven, the farthest room receives less cooling.
You might experience:
- Bedroom warm at night
- System improves after restart
- Compressor unusually noisy
Regular maintenance under an aircon service contract keeps pressure balanced. If ignored, the outdoor unit may require full aircon compressor servicing.
Preventing Future Cooling Problems
Most one-room cooling complaints are preventable. Scheduled maintenance keeps airflow strong and prevents breakdowns.
Recommended servicing plan:
- Every 3–4 months: aircon general servicing
- Twice yearly: aircon steam wash
- Yearly: aircon chemical wash
- When performance drops: inspection and gas check
- Long-term: aircon service contract
Many homeowners also use seasonal aircon promotion packages to reduce maintenance costs.
Daikin aircon promotion
Mitsubishi aircon promotion
Midea aircon promotion
Panasonic aircon promotion
When Should You Call a Technician?
Contact professionals immediately if you notice:
- Persistent aircon not cold
- Indoor dripping water
- Repeated aircon light blinking
- Any displayed aircon error code
- Strange sounds or odour
Daikin aircon error code
Mitsubishi Aircon Error Code
Midea Aircon Error Code
Panasonic aircon error code
Quick action prevents serious damage and expensive repairs.
Keep Every Room Comfortably Cool
A single warm room doesn’t mean your whole system is failing — it simply signals a localised issue needing attention. Early servicing saves electricity, protects the compressor, and restores proper cooling.
letscool aircon and services Singapore offers reliable solutions, including:
- Complete aircon servicing Singapore
- Fast aircon repair Singapore
- Professional cleaning treatments
- Genuine aircon spare parts
- Affordable maintenance plans
With proper care and timely servicing, every room in your home can stay cool, comfortable, and energy-efficient all year round.
Aircon servicing Singapore
Aircon installation
11 Mandai Estate,
#05-15 Eldix,
Singapore 729908
Mail ID: [email protected]
Service - Call: +65 9862 3678 (or) WhatsApp us: https://wa.me/6598623678
Installation - Call: +65 94507178 (or) WhatsApp us: https://wa.me/6594507178
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