Fenwal 35-630501-003 Module 320788-702 or audible humming from the

or audible humming from the coil without the valve opening

While typically pre-set

11" WC setpoint required by the furnace control board

Thermal Overload Protection: Integrated internal protection prevents burnout during voltage fluctuations or restricted airflow conditions

What is the purpose of the inverted flare fittings

Fenwal 35-630501-003 Module 320788-702 or audible humming from theThe Fenwal 35 630501 003 is a microprocessor based intermittent pilot ignition control designed for precise spark to pilot sequences in gas fired atmospheric burners. Engineered for 24VAC systems, this HVAC ignition module provides high reliability timing via advanced digital circuitry, ensuring repeatable intermittent pilot sequences across residential and commercial heating applications. This specific Fenwal ignition module features a 30 second