Lochinvar & A.O. Smith 100172003 Gas Valve Assembly 321042-401 a "make-on-rise" or SPDT thermostat
Baker’s notes & crumb story
Description
Lochinvar & A.O. Smith 100172003 Gas Valve Assembly 321042 401 a "make on rise" or SPDT thermostat a "make on rise" or SPDT thermostat is required Persistent codes often indicate a recurring sensor or communication bus fault that requires technical inspection