Z. Cool Technology
Kurla West, Mumbai, Maharashtra
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Product Details:
| Minimum Order Quantity | 1 Piece |
| PCB Type | Single Layer |
| Compatibility | Split AC |
| Usage/Application | Electronics |
| Copper Thickness | 1 mm |
| Brand | Carrier |
| CAPACITY | 3 TON |
The Carrier AC PCB is the electronic control board responsible for managing and coordinating the air conditioner's operation. Carrier uses both inverter and non-inverter technologies, so PCB designs vary accordingly.
🧠 Core Function:The PCB acts as the main controller, receiving input from sensors and the user (via remote), then sending commands to operate:
The compressor
Indoor/outdoor fan motors
Swing motors
Sensors
Display units
In inverter models, the PCB also adjusts compressor speed for energy efficiency. In non-inverter models, the PCB simply switches the compressor ON/OFF via relays.
🧰 Main Types:| Type | Function |
|---|---|
| Indoor PCB | Controls indoor fan, sensors, display, louver motor, and communicates with the outdoor PCB |
| Outdoor PCB | Controls the compressor (inverter drive), outdoor fan, and receives commands from the indoor unit |
| Component | Function |
|---|---|
| Microcontroller (MCU) | The brain of the PCB, executing control logic |
| Power Supply Unit (SMPS) | Converts 220V AC to DC (5V/12V) |
| Relays / Solid State Relays | Switch high-voltage devices like motors |
| Sensor Inputs | Temperature sensors (Room, Coil), sometimes humidity |
| Display Driver Circuit | Drives LED/LCD panel on indoor unit |
| IR Receiver | Receives remote control commands |
| Motor Driver IC | Drives fan and louver motors (BLDC or AC) |
| Communication Interface (UART/485) | Enables data exchange between indoor and outdoor units |
| EEPROM/Flash Memory | Stores AC settings and error logs |
| Function | Description |
|---|---|
| Temperature Regulation | Uses thermistors to control room temperature |
| Fan Speed Control | Varies motor speed as per selected mode |
| Mode Switching | Cool, Dry, Fan, Heat (if applicable) |
| Swing Motor Control | Moves louvers to adjust airflow |
| Compressor Modulation (Inverter only) | Adjusts compressor speed for efficient cooling |
| Error Diagnosis | Displays fault codes (e.g., E1, P4, H6) when faults occur |