ComfortStar 17122000018658 – Indoor Control Circuit Board for Mini-Split Systems
The ComfortStar 17122000018658 is an OEM indoor control circuit board designed for use in specific ComfortStar ductless mini-split indoor units. This board functions as the central control for fan operation, thermistor input processing, indoor-to-outdoor communication, and signal regulation for unit operation.
This PCB is factory-engineered to meet electrical and layout specifications for the original equipment. It is intended for use as a direct replacement in supported ComfortStar mini-split models. Proper model verification is required prior to installation.
Functional Features
System Integration: Controls indoor blower motor, swing actuator, and thermistor feedback
Communication Interface: Supports data exchange between indoor and outdoor units via low-voltage signal bus
Mounting Format: Pre-aligned with factory screw holes and terminal configurations
Control Voltage: 24V AC low-voltage power
Application: ComfortStar mini-split indoor air handler assemblies
Technical Specifications
Part Number: 17122000018658
Voltage: 24V AC
Dimensions: 8.5 x 6.5 x 2 inches
Weight: 1.5 lbs
Compliance: UL listed
Installation Guidelines
This control board should be installed by qualified HVAC service personnel. Ensure power to the indoor unit is fully disconnected before replacement. Verify all connector orientation and match terminal locations based on system diagrams. Electrostatic discharge precautions should be observed during handling to prevent board damage.
Use Cases
OEM replacement for failed or unresponsive ComfortStar indoor control boards
System servicing requiring restoration of indoor fan or sensor control logic
Replacement during troubleshooting of communication faults between indoor and outdoor units