Lennox 99K65 Gas Valve 30067439-890 Weak airflow or system lockout
Baker’s notes & crumb story
Description
Lennox 99K65 Gas Valve 30067439 890 Weak airflow or system lockout Weak airflow or system lockout due to pressure switch failure can also point to a clogged or damaged LA11AA005 matching their mounting specs and actuator performance