Lennox 86H72 190F Limit Switch Zero Differential Operation: As a

Zero Differential Operation: As a direct-acting valve

Common Questions Which valve series is this adapter compatible with

What causes these switches to fail prematurely

preventing common issues like flame instability or lockout on high-demand equipment

often leading to valves slamming or failing to open

Lennox 86H72 190F Limit Switch Zero Differential Operation: As aThe Lennox 86H72 190F Limit Switch is a critical safety component designed for high performance temperature regulation in residential and commercial heating systems. This genuine OEM Lennox part features an auto reset configuration, engineered to interrupt burner operation when the plenum temperature reaches the 190F high limit threshold. Once the system cools to the 160F reset point, the switch automatically closes the circuit, allowing for continued