Coleman Defrost Relay 3030-3781 Heat Pump Control Relay Replacement

The Coleman Defrost Relay 3030-3781 is an OEM replacement control relay used in Coleman heat pump systems to manage the defrost cycle. This relay plays a critical role in switching components during cold-weather operation, allowing the system to temporarily reverse operation and clear frost buildup from the outdoor coil.

Built to original equipment specifications, this relay ensures proper timing and electrical switching during defrost mode, helping maintain system efficiency, airflow, and heating performance. A failed defrost relay can cause symptoms such as ice buildup on the outdoor unit, reduced heating output, or improper system cycling.

Key Features:

• OEM defrost relay for Coleman heat pump systems

• Controls electrical switching during defrost cycle

• Helps prevent coil icing and airflow restriction

• Designed for reliable performance in HVAC environments

• Part number: 3030-3781

This relay is an essential replacement part when servicing or restoring proper defrost function in compatible Coleman heat pump units.