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visible through a wide-angle viewing window
replacing the assembly is a common solution
and 3155 units
maintaining precise primary air-to-fuel ratios to prevent nuisance lockouts and sooting
Lennox 27H87 Limit Switch visible through a wide-angle viewingThe Lennox 27H87 Limit Switch is a critical OEM safety component engineered for precise thermal management in high performance heating systems. This 120 160F auto limit switch is specifically designed to monitor furnace plenum temperatures, providing a fail safe against overheating by interrupting the burner circuit if thresholds exceed the factory calibrated 160F limit. As a veteran grade HVAC replacement part, the 27H87 ensures seamless integration