the Lennox 88K30 may have lost its calibration or suffered a bimetal failure

color-coded visual of system dehydration levels

heat-resistant insulation engineered to withstand the extreme thermal environments of a residential boiler combustion chamber

This L150-40F equivalent switch is built for high-duty cycles and long-term reliability in varying airflow environments

or an "open" reading during a capacitance test

Watts 0780003 Valve Els PW 17895 the Lennox 88K30 may haveThe Watts 0780003 Valve, also identified as the Watts Series 500, is a 1 2 inch heavy duty float valve engineered for demanding commercial, industrial, and agricultural water control. As a technical staple in HVACR refrigeration systems and large scale irrigation, this bronze float valve features a robust machined flange for secure tank wall mounting. The Watts 0780003 utilizes a single lever, no jam action paired with manganese bronze armsavailable