10123531 Furnace Limit Switch 325F Manual Reset Compatible with Amana Goodman

The 10123531 furnace limit switch is a critical M/R replacement part engineered to resolve temperature control malfunctions in heating systems. Its core working principle: it maintains a closed circuit during normal furnace operation to allow proper heating. When internal temperatures spike to 325F—indicating overheating—the switch automatically opens to cut power, preventing damage to furnace components. Unlike auto-reset models, this switch requires manual intervention to restore functionality, but a key operation note applies: it must fully cool down first. Resetting the switch while it remains hot can lead to permanent damage and compromise its ability to detect overheating in subsequent use. This manual design adds an extra safety layer, ensuring users address the root cause of overheating (such as blocked vents or faulty fans) before restarting the furnace. Compatible with select Amana and Goodman furnace models, this switch serves as a direct alternative to obsolete parts, helping restore proper system operation without extensive modifications. Its durable construction is optimized for high-heat and demanding operating conditions, ensuring reliable performance in daily use scenarios. For safe and correct installation: Always verify your furnace’s exact model number against manufacturer specifications to confirm compatibility. Disconnect all power sources before starting the replacement process and refer to your equipment’s user manual for step-by-step guidance.

• 325F M/R Function：Triggers power cut at 325F when overheating occurs; requires manual operation to restore circuit and resume furnace use
• Cooling Requirement for Reset：Must fully cool down before manual reset; attempting reset while hot may cause switch damage and affect performance
• Clear Working Principle：Stays closed during normal operation; opens automatically at 325F to protect furnace internal components
• Broad Compatibility：Fits select Amana and Goodman furnace models; replaces obsolete parts for seamless system restoration
• Safety Installation Warning：Disconnect furnace power (unplug or turn off circuit breaker) before replacement; follow equipment manual strictly