Laars Heating Systems R0408200 Module 318973-401 or persistent communication errors between

or persistent communication errors between the indoor and outdoor sections

Using it in systems with higher pressure may prevent the trap from opening against the differential pressure

Wiring should follow the Line M1 close-high logic for the auxiliary circuit

and housing for a streamlined installation

Using an incorrectly rated kit can lead to excessive static pressure or inadequate airflow

Laars Heating Systems R0408200 Module 318973-401 or persistent communication errors betweenThe Laars R0408200 Ignition Module is a critical 24V component engineered for precise sequence control in high efficiency hydronic boiler systems. This intermittent pilot (IP) controller is designed for 24VAC circuits, featuring a 15 second pre purge (PP) cycle and a 7 second trial for ignition (TFI). By managing the pilot gas flow and high voltage spark activation, the R0408200 ensures reliable flame rectification and safety shut off protocols