Clean the rod lightly with a non-abrasive pad to restore proper flame rectification

This L165-20F limit switch serves as a primary thermal cutoff

Common Questions How do I troubleshoot a suspected bad sequencer

preventing energy loss and system bypass

What should be checked if the secondary fuse is blowing

Siemens Building Technology GDE166.1P Actuator R-407A Clean the rod lightly withThe Siemens GDE166. 1P is a high performance OpenAir damper actuator designed for precise modulating control in HVAC systems. Operating on a 24V AC DC power supply, this non spring return actuator delivers 44 lb in (5 Nm) of torque, making it a reliable choice for constant or variable air volume (VAV) applications. It accepts a standard 0 10 VDC control signal and provides a proportional 0 10 VDC feedback signal for real time position monitoring.