simply remove the factory-installed R/Rc metal jumper on the terminal block

or if there is visible arcing at the pins

Safety Instrumentation: Features redundant solenoid seats to prevent hazardous gas bypass during standby cycles

This OEM furnace part provides a direct fit

the 325 series can be used outdoors if protected from the elements

Trane PLT2813 Access Plate 340155-7026 simply remove the factory-installed R/RcThe Trane PLT02813 (PLT2813) is a precision engineered plastic drain pan access plate designed specifically for compatibility with Trane and American Standard air handlers and evaporator coils. This OEM replacement component provides a secure, leak proof seal for the secondary drain pan access point, ensuring the integrity of the condensate management system. Fabricated from high grade, heat resistant polymer, the PLT2813 access cover resists warping