Allanson 421-BT299 Transformer Els PW 17895 requiring a physical reset by

requiring a physical reset by a technician once the thermal event is resolved and the system has cooled

which is critical for maintaining system pressure stability and preventing pneumatic signal degradation

it provides the precise amperage draw required by the furnace control board to prevent nuisance lockouts or ignition failures

This is a genuine OEM condenser fan blade for Amana and Goodman PTAC outdoor sections

The primary difference is the handwheel material

Allanson 421-BT299 Transformer Els PW 17895 requiring a physical reset byThe Allanson 421 BT299 is a heavy duty ferromagnetic ignition transformer designed for reliable high voltage performance in demanding oil burner applications. As a veteran grade service replacement transformer, this 120V ignition transformer delivers a consistent 10,000V secondary output at 23mA with a mid point ground configuration, ensuring a stable spark even in older recovery systems. Unlike standard units, the 421 BT299 is a universal oil ignitor