Source1 3103877000 Defrost Control Board

Product Description

The Source1 3103877000 is a defrost control board designed for York HVAC systems. This OEM replacement part manages the defrost cycle in heat pump and refrigeration equipment. It monitors system conditions and triggers the defrost sequence when ice or frost builds up on the outdoor coil. Without proper defrost control, coil icing reduces airflow and system efficiency, leading to higher energy use and potential equipment damage. The Source1 3103877000 restores correct defrost operation and keeps the system running at peak performance. HVAC technicians and service contractors rely on this type of control board during seasonal maintenance and emergency repair calls. The board communicates system status through indicator lights or display signals, making it easier to identify fault codes during diagnostics. Using a genuine OEM defrost control board ensures compatibility with York equipment and reduces the risk of callbacks or premature failures. This board is built to the same specifications as the original factory part, so installation is straightforward and fits the existing wiring harness and mounting points. Defrost control boards like the Source1 3103877000 are critical components in any heat pump system operating in cold climates. They protect the compressor and refrigerant circuit by preventing excessive ice accumulation on the outdoor unit. Replacing a failed defrost board is one of the most common heat pump service tasks, and using the correct OEM part is the recommended approach for reliable, long-term results. This part measures 7 inches in length, 6 inches in width, and 2.5 inches in height, making it a compact but essential component in the overall HVAC control system.

• OEM defrost control board replacement for York HVAC and heat pump systems
• Manages defrost cycle timing and triggers sequences based on system conditions
• Supports fault indication through visual signals such as blinking lights or display messages

Product Highlights

The Source1 3103877000 defrost control board is a direct OEM replacement that restores accurate defrost cycle management in York heat pump systems. It supports reliable diagnostics and helps maintain energy efficiency over the life of the equipment.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 3103877000

Technical Specifications

• Length: 7 inches
• Width: 6 inches
• Height: 2.5 inches
• Weight: 0.36 pounds