1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Carrier 1 Ton 3 Star AI Flexicool Inverter Split AC, Model CAI12ER3R33F0. Please read this manual thoroughly before using the appliance and retain it for future reference.
2. Key Features
- AI Flexicool Inverter Technology: Features a variable speed compressor that adjusts power based on heat load, offering Convertible 4-in-1 cooling modes and up to 50% energy savings.
- Capacity: 1 Ton, suitable for small rooms up to 110 square feet, with 400 CFM air flow and effective cooling even at ambient temperatures up to 52 degrees Celsius.
- Energy Efficiency: 3 Star energy rating with an Annual Energy Consumption of 704.46 units and an ISEER Value of 3.88.
- 100% Copper Condenser Coil with Aqua Clear Protection: Ensures durability, prevents rust and corrosion, and provides efficient cooling with low maintenance.
- Dual Filtration: Equipped with HD (High Density) and PM 2.5 filters for improved indoor air quality.
- Turbo Cool: Activates for faster cooling when immediate comfort is desired.
- Hydro Blue Coating: Enhances the long-term durability of the coil and fin, protecting against corrosion.
- Refrigerant Leakage Detector: Alerts users to potential refrigerant leaks for safety and optimal performance.
- Auto Cleanser: Automatically disinfects and cleanses the indoor unit for fresher and cleaner air.
- ADC Sensor: Advanced sensors for precise temperature control and efficient operation.
- Stabilizer Free Operation: Operates efficiently within a voltage range of 135V to 280V, eliminating the need for an external stabilizer.
- R32 Refrigerant: Environmentally friendly refrigerant with zero ozone depletion potential.

Image: Overview of Carrier AC key features.
3. Setup and Installation
Your Carrier Split AC unit requires professional installation to ensure proper functioning and safety. Please contact authorized service personnel for installation.
3.1. What's in the Box
- 1N Indoor Unit
- 1N Outdoor Unit
- 1 set Copper Installation pipe (3 Meter)
- 1N Interconnecting wire
- 1N Remote Control
- 1N User Manual
- 1N Warranty Card
Video: A brief overview of the Carrier Ester Flexicool Inverter Split AC, highlighting its features like Flexicool technology, cooling capacity, copper condenser, stabilizer-free operation, auto restart, low noise, and warranty. This video provides a quick visual summary of the product's benefits and components.
4. Operating Instructions
4.1. Basic Operation
- Power On/Off: Press the Power button on the remote control to turn the AC unit on or off.
- Mode Selection: Use the 'Mode' button to cycle through available modes: Auto, Cool, Dry, Fan.
- Temperature Adjustment: Use the Up/Down arrows to set your desired temperature. The hidden display will show the set temperature.
- Fan Speed: Select from 4 fan speeds using the 'Fan' button to control airflow.
4.2. Advanced Features
- Flexicool Convertible 4-in-1 Cooling: This feature allows you to adjust the cooling capacity of the AC. Refer to the remote control for specific settings (e.g., FC1, FC2, FC3, Turbo) to match your comfort needs and save energy.
- Turbo Cool: Activate this function for rapid cooling of the room. The AC will operate at maximum fan speed and cooling capacity for a set period to quickly reach the desired temperature.
- Sleep Mode: Designed for comfortable sleep, this mode automatically adjusts the temperature and fan speed to maintain optimal comfort while reducing energy consumption during the night.
- Auto On/Off Timer: Set specific times for the AC to turn on or off automatically. Consult the remote control section of the full manual for detailed timer programming.
- Follow Me Function: When activated, the remote control acts as a thermostat, sensing the temperature around it and adjusting the AC's operation to maintain the set temperature at your location.
- Auto Restart: In case of a power outage, the AC will automatically resume operation with its previous settings once power is restored.

Image: Remote control with Flexicool 4-in-1 cooling options.
5. Maintenance
Regular maintenance ensures the longevity and efficient performance of your Carrier AC. Always disconnect power before performing any maintenance.
5.1. Filter Cleaning
The unit features Dual Filtration with HD and PM 2.5 filters. It is recommended to clean these filters monthly, or more frequently depending on usage and air quality. Gently remove the filters and wash them with lukewarm water and mild detergent. Allow them to dry completely before reinserting.

Image: Dual Filtration system with HD and PM 2.5 filters.
5.2. Auto Cleanser Function
Activate the Auto Cleanser function periodically. This feature automatically disinfects and cleanses the indoor unit's coil, preventing the buildup of mold and bacteria, and ensuring the delivery of fresh and clean air.
5.3. Coil and Fin Protection
Your AC is equipped with Hydro Blue Coating and Aqua Clear Protection on the condenser coil. These coatings protect against rust and corrosion, contributing to the unit's durability and reducing maintenance needs. Periodically inspect the outdoor unit for any debris accumulation and clean as necessary.

Image: Hydro Blue Coating for long-term durability.

Image: Aqua Clear Protection for exceptional corrosion resistance.
6. Troubleshooting
If you encounter any issues with your AC, refer to the following common problems and solutions before contacting customer service.
- AC not turning on: Check power supply, circuit breaker, and ensure the remote control batteries are functional.
- Insufficient cooling: Verify temperature settings, clean air filters, ensure no obstructions to airflow, and check if doors/windows are closed.
- Unusual noises: Minor noises during operation are normal. If loud or persistent, check for loose parts or contact service.
- Water leakage: Ensure the drain hose is not blocked or kinked.
- Refrigerant Leakage Detector alert: If the unit detects a refrigerant leak, contact authorized service personnel immediately.
For complex issues or if troubleshooting steps do not resolve the problem, please contact Carrier customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Carrier |
| Model | CAI12ER3R33F0 |
| Energy Efficiency | 3 Star |
| Capacity | 1 Ton |
| Annual Energy Consumption | 704.46 Kilowatt Hours Per Year |
| Noise Level | 32 Decibels |
| Installation Type | Split System |
| Voltage | 230 Volts (AC) |
| Wattage | 1055 Watts |
| Material | Copper |
| Refrigerant Gas | R32 |
| Indoor Unit Dimensions (WxHxD) | 85 x 27 x 22 cm |
| Outdoor Unit Dimensions (WxHxD) | 78 x 54 x 26.5 cm |
| Indoor Unit Weight | 9.5 Kg |
| Outdoor Unit Weight | 22 Kg |

Image: Indoor Unit Dimensions and features.

Image: Outdoor Unit Dimensions and features.

Image: Energy Savings Guide for 3 Star rating.
8. Warranty and Support
Your Carrier AC comes with comprehensive warranty coverage:
- 10 Years Warranty on Compressor (Terms & Conditions apply)
- 5 Years Warranty on PCB (Terms & Conditions apply)
- 1 Year Warranty on Product (Terms & Conditions apply)
For any service requests, technical assistance, or warranty claims, please contact Carrier Customer Care at 18001033333 or email at carriermidea@gmail.com.

Image: Warranty details for Compressor and PCB.





