The board features a diagnostic LED that flashes specific patterns

This unit features a 25 square inch effective diaphragm area

Key Benefits OEM Compatibility: Exact drop-in replacement for Lennox 45C51 and 45C5101

which lead to excessive heat buildup in the exchanger

Common Questions Which boiler models use the 383-500-619 kit

Carrier EF17BG281 Reversing Valve 320819-301 The board features a diagnosticThe Carrier EF17BG281 Reversing Valve is a critical 4 way components designed for heat pump systems, facilitating the change in refrigerant flow to toggle between heating and cooling modes. This industrial grade reversing valve features a 5 8" x 7 8" ODF (Outside Diameter Female) connection, ensuring a secure solder joint for high pressure applications. Engineered for 24V control circuits, this valve is a direct OEM replacement for various Carrier,