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The GOODMAN b1370115 is an automatic-reset limit control switch designed for electric heat applications. It monitors supply-air temperature and opens the circuit when a high-temperature condition is detected, protecting the heat strips and surrounding components from damage. The switch resets automatically once temperatures return to a safe range, with an operating range of 115 to 150 degrees F. Licensed HVAC technicians install this component as part of routine service or repair on electric furnaces and air handlers equipped with 15kW heat kits.
This limit control is used in residential electric heating systems, specifically in equipment fitted with 15kW electric heat strip assemblies. It mounts within the heat section of the air handler or electric furnace and provides over-temperature protection during normal and fault-condition operation. The compact form factor allows fitment in tight equipment cabinets without modification to the surrounding assembly.
Designed as an OEM-style replacement limit control for GOODMAN electric air handlers and furnaces equipped with 15kW electric heat assemblies. Verify exact fitment against the equipment model number and wiring diagram before installation.
Installation should be performed by a licensed HVAC technician in accordance with applicable local codes and the equipment manufacturer service documentation. Disconnect all electrical power to the unit before removing or installing the limit control. Confirm the replacement switch is oriented and mounted correctly per the original equipment configuration. Do not energize the heat strips until all wiring connections are secure and covers are reinstalled.
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