York S1-6555127 Control Board

The York Source 1 S1-6555127 Control Board is an OEM HVAC circuit board kit designed for compatible York heating and cooling equipment. Identified as a two-stage control board kit without communication capability, the S1-6555127 manages equipment operating sequences and interfaces with the appropriate system components according to the unit's control configuration.

This York HVAC control board is intended for applications requiring conventional two-stage operation rather than a communicating control architecture. When troubleshooting a failed furnace control board or HVAC control circuit, technicians should verify incoming power, transformer output, thermostat signals, wiring, safeties, grounding, and connected loads before replacing the board.

For service replacement, match the complete York S1-6555127 circuit board part number and confirm compatibility using the equipment model and serial number. Control boards that appear physically similar may have different staging logic, terminal assignments, firmware, or equipment applications, so proper OEM cross-reference verification is essential before installation.

Key Benefits

• York OEM control board for compatible York and Source 1 HVAC equipment
• Part number: S1-6555127
• Two-stage HVAC control board kit
• Non-communicating control configuration
• Controls equipment operating and staging sequences
• Designed for compatible conventional thermostat/control applications
• Suitable for service replacement when verified against the original board and equipment model

Common Questions

Is the York S1-6555127 a communicating control board?

No. The S1-6555127 is identified as a two-stage control board kit without communication capability. Verify the original system control configuration before ordering.

How do I know if the York S1-6555127 will fit my HVAC unit?

Confirm the complete equipment model and serial number, original control board part number, thermostat configuration, staging requirements, wiring connections, and system control type. Do not select a replacement board based only on physical appearance.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

S1-6555127 is the cross for S1-373-49824-003