" causing the fan to run continuously even when the thermostat is satisfied

as this typically indicates junction degradation

the lead ensures low electrical resistance and includes a mica washer to prevent shorting

Series 100

Trane TRR0465 Transformer Els PW 17895 " causing the fan toThe Trane TRR0465 Transformer is a heavy duty, field ready power solution designed for reliable 115 120V to 24V step down applications in residential and light commercial HVAC systems. Rated at 40VA, this Class 2 transformer provides the consistent control voltage required to power internal circuitry, including thermostats, ignition control boards, and contactor coils. Field technicians often rely on the TRR0465 as a direct replacement for furnace