Description
The Amana-Goodman 0121L03099 Post-Limit Switch is a safety control component to monitor operating conditions and support regulated system shutdown when preset limits are reached. It is installed within the furnace or air handler assembly, where it detects temperature or system threshold conditions and signals the control board when abnormal limits are exceeded. It is commonly found to protect internal components during operation. By interrupting based on limit conditions, it maintains safe furnace cycling and prevents overheating or operational stress within HVAC systems.
