Trane THT2436 Limit Switch a vital safety requirement that

a vital safety requirement that forces a manual inspection of the heat exchanger and venting system before the furnace can be returned to service

it can cause the pressure switch to fail

Key Benefits for Technicians: Direct OEM Replacement: Matches exact factory specifications for Nordyne part number 626461R

whereas the K6-1 is the oversized variant designed for 1/2" to 3/4" shafts

or an audible humming sound from the outdoor unit without ignition

Trane THT2436 Limit Switch a vital safety requirement thatThe Trane THT2436 is a mission critical HVAC high limit switch designed for furnace temperature regulation and system safety. This OEM Trane replacement part serves as the direct successor for the legacy 1NT21L 2163 model. Engineered as an automatic reset limit switch with an SPST (single pole, single throw) configuration, the device is calibrated to open the circuit at 170F and automatically re close once temperatures drop back to 140F. This precise