The LED indicator provides diagnostic flash codes

the S1-025-31978-000 eliminates the need for field-added components

which is vital for preventing recurring overheating cycles

Technician-Ready: Organized hardware for rapid field replacement during seasonal maintenance or new installs

the PCB control board may not be sending the required output signal

Laars Heating Systems RS2104900 Gasket Freon The LED indicator provides diagnosticThe Laars Heating Systems RS2104900 Gasket is a critical OEM component designed to provide a high integrity seal between the gas valve and the venturi assembly. As a veteran technician, you know that maintaining the correct air to fuel ratio is non negotiable for combustion stability. This gas valve venturi gasket is precision cut from high grade cork to ensure it conforms perfectly to the mating surfaces of Laars boilers and high efficiency