This OEM Nordyne replacement part operates with an L135-30F fixed setting

you should verify if part numbers 512-200-078 or 512-200-079 are required for your specific manifold configuration

preventing hazardous operation

making it a versatile HVACR replacement part for professional service calls

NS-BTP7002-0

Lennox 10B96 Sequencer 321702-401 This OEM Nordyne replacement partThe Lennox 10B96 Sequencer is a critical field replacement component designed for precise electric heat sequencing and blower motor control in residential air handlers. Featuring a single pole, double throw (SPDT) configuration, this 24V HVAC sequencer manages circuit activation with a specific timing profile: a 1 to 30 second ON delay and a 90 to 200 second OFF delay. These designated intervals prevent simultaneous high draw electrical loads,