Outdoor Main Circuit Board for Alegria Platinum CM2-18-2Z

ComfortStar Outdoor Main PCB – For Alegria Platinum CM2-18-2Z Systems

The ComfortStar outdoor main circuit board (part no. 17122300001569) is the primary control component for the Alegria Platinum CM2-18-2Z mini-split outdoor unit. This board manages all major system operations including compressor control, outdoor fan modulation, and communication with connected indoor zones. Designed for inverter-driven heat pump systems, it regulates real-time performance to ensure stable and efficient operation across varying load demands.

This main PCB is engineered to meet OEM specifications for the CM2-18-2Z model and includes integrated diagnostics, overcurrent protection, and surge handling. Its compact design and factory-mounting footprint allow for straightforward replacement within the outdoor enclosure. This component is critical to system functionality and should be installed by a qualified HVAC technician to ensure compatibility and safety compliance.

Application and Function

• System Model: Alegria Platinum CM2-18-2Z
• Function: Central outdoor control for compressor, fan motor, and inter-unit communication
• Voltage: 24V control logic
• Mounting: OEM bracket alignment for factory fit

Key Features

• Compressor Sequencing: Supports inverter compressor ramping and operational limits
• Fan Control: Modulates condenser fan speed based on system load and coil temperature
• Fault Code Memory: Integrated LED indicators for diagnostic reference
• Protection Circuitry: Includes built-in fuse, voltage protection, and thermal trip logic

Installation Guidelines

This circuit board should only be installed after isolating the system power supply. Use of the CM2-18-2Z wiring schematic is required for correct terminal mapping. Confirm voltage and polarity on harness connections prior to energizing the unit. Always follow manufacturer service procedures during replacement or troubleshooting.

Recommended Tools

• Digital multimeter (for voltage verification)
• Phillips screwdriver and nut driver
• Wiring diagram (ComfortStar CM2-18-2Z service manual)
• Anti-static wrist strap (recommended)

Use Case

• Direct replacement for OEM outdoor control board in CM2-18-2Z systems
• Field service replacement due to electrical failure, water ingress, or surge damage
• Factory-specified component for ComfortStar inverter models in the Alegria Platinum line