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Cracks in the insulation or loose terminal connectivity will bleed off the voltage required for a strong spark
Encapsulated Design: The hermetically sealed switch prevents contact contamination from dust
meaning it has a set diameter
and Frigidaire furnaces
Lennox 18M84 Limit Switch Els PW 17895 Cracks in the insulation orProfessional grade Lennox 18M84 limit switches are critical safety components designed to regulate internal furnace temperatures and protect heat exchangers from thermal stress. This OEM Lennox limit control features a 3 inch insertion depth and is factory calibrated for an auto reset range of 230 260F. As a normally closed switch, it breaks the electrical circuit to the gas valve if the plenum temperature exceeds the 260F threshold, typically caused