Laars Heating Systems R0456900 Ignition Module Freon EMI Suppression: Features a built-in

EMI Suppression: Features a built-in 1k ohm resistor to protect sensitive ignition module electronics from feedback

The Marley Engineered Products 4520-2059-000 is an OEM 160-230F AUTO Limit Switch designed for high-accuracy temperature monitoring in HVAC heating systems

Check for a weak pilot flame that isn't fully engulfing the top 1/2 inch of the thermocouple

and hardware

Laars Heating Systems R0456900 Ignition Module Freon EMI Suppression: Features a built-inThe Laars Heating Systems R0456900 Ignition Module is a critical direct fit replacement for ensuring precise sequence control in high efficiency heating applications. As a hot surface ignition (HSI) control, this module is engineered for compatibility with Jandy JXi and LXi Low NOx heaters, as well as several Laars and Zodiac heating systems including the Legacy LRZM series. It functions by monitoring the flame sensor, limit switches, and pressure