Carrier HN67QC005 Sequencer Els PW 17895 the limit switch may be

the limit switch may be tripped or stuck open

ensuring the ignition sequence remains consistent and reliable under varying gas pressures and environmental conditions

Durable Construction: Manufactured from robust materials to withstand high-pressure refrigerant environments and prevent erosion

Can this be used for both positive and negative pressure

Does this gauge measure water height

Carrier HN67QC005 Sequencer Els PW 17895 the limit switch may beThe Carrier HN67QC005 Sequencer is a critical OEM replacement part designed to manage the staging of electric heating elements and blower motor operation in high efficiency electric furnaces and heat pump systems. As a direct replacement for the legacy HN67QC005B, this 24V staged heating control prevents simultaneous electrical surges by staggering the activation of resistive loads, protecting the transformer and circuit breakers. This HVAC sequencer