Indoor Control Circuit Board for Alegria Platinum CPP018CD(I)

ComfortStar C70290050 Indoor Control Circuit Board for Alegria Platinum CPP018CD(I)

The ComfortStar C70290050 indoor control circuit board is a factory replacement part engineered for the Alegria Platinum CPP018CD(I) mini-split indoor unit. It serves as the central control module for managing signal inputs, fan motor operation, thermistor readings, and communication with the system’s outdoor unit.

This board is configured for 24V control environments and integrates with existing system wiring harnesses and remote receiver modules. Its design follows ComfortStar OEM standards for performance and reliability in ductless HVAC applications.

Product Features

• OEM-Certified Design: Direct-fit replacement for CPP018CD(I) indoor units.
• Integrated System Control: Regulates fan speed, temperature inputs, and inverter communication.
• Preconfigured Terminals: Accepts original harness and sensor connections without modification.
• Reliable Operation: Maintains indoor unit functionality across heating and cooling cycles.

Technical Specifications

• Model Number: C70290050
• System Compatibility: Alegria Platinum CPP018CD(I)
• Voltage: 24V AC control signal
• Installation: Panel-mount with designated terminal layout
• Function: Indoor unit main board for ComfortStar mini-split system

Installation Guidelines

Installation of the C70290050 board requires de-energizing the unit, proper handling of static-sensitive components, and re-termination of all wiring according to the CPP018CD(I) service manual. This task should be performed by qualified HVAC technicians familiar with ComfortStar system architecture to ensure correct operation and control synchronization with the outdoor inverter board.

Contractor Notes

• Factory-authorized part for Alegria Platinum indoor air handlers.
• Do not substitute with non-OEM boards due to firmware and control incompatibility.
• Verify correct thermistor and motor feedback connections during installation.

Summary

The ComfortStar C70290050 is the designated replacement indoor circuit board for the CPP018CD(I) air handler. Designed for precision control and long-term reliability, this board is essential for restoring full operational capability to ductless systems requiring OEM-spec components.