Lennox 57M67 Pressure Switch as well as POE and

as well as POE and PVE oils

How do I reset a manual limit switch

this adapter also fits the VR4200 and VR4300 lines

the component should be replaced

Lennox 57M67 Pressure Switch as well as POE andThe Lennox 57M67 Pressure Switch is a high precision OEM component engineered for critical safety monitoring in gas fired furnaces and HVAC systems. As a veteran technician knows, maintaining the correct pressure threshold is vital for inducer motor verification and combustion safety. This SPST pressure switch is factory calibrated to actuate at 1. 71" WC (water column), ensuring that the exhaust blower is moving sufficient air before the ignition