a Danfoss AME series actuator should be specified

this specific model is a 3-phase heat kit

allowing the HVAC high limit switch to re-engage once the system cools to 110°F

it typically requires a common wire connection or battery power depending on the specific Reznor heater control board configuration

swapping in this genuine Carrier part restores factory-spec airflow and efficiency

Siemens Combustion LFL1.335 Control 318820-201 a Danfoss AME series actuatorThe Siemens Combustion LFL1. 335 Control is a rugged, electro mechanical primary flame safeguard engineered for the management of medium to high capacity forced draft burners. Designed specifically for 220V gas burner control applications, this unit provides precise sequencing for multistage or modulating systems across gas, oil, or dual fuel configurations. It features a fixed 37 second pre purge time (t1) and a 2. 5 second safety time (TSA),