First Company FT-E143 Fan and Heat Sequencer

Product Description

The FIRST COMPANY FT-E143 is a fan and heat sequencer designed for electric heating systems. A sequencer controls the timing of heating elements and the blower fan, staging them on and off in a controlled sequence to prevent electrical overload and ensure smooth, efficient operation. Licensed HVAC technicians install this component as part of routine maintenance or when diagnosing blower or heat element timing faults in electric furnaces and air handlers.

The FT-E143 is suited for residential and light commercial electric heating applications. It serves as a replacement or service part in electric furnaces and air handlers where staged element activation is required. Technicians encountering erratic fan operation, failure of heating elements to energize in sequence, or heat relay faults will find this sequencer applicable to common service scenarios.

Key Features

• Controls staged activation of electric heating elements to reduce startup current draw
• Manages blower fan on and off timing in coordination with heat elements
• Direct replacement form factor for service and maintenance applications
• Suited for electric furnace and air handler heating systems

Compatibility

Designed as an OEM-style replacement sequencer for residential and light commercial electric furnaces and air handlers requiring staged fan and heat element control.

Installation Notes

Installation should be performed by a licensed HVAC technician. Before servicing, disconnect and lock out all electrical power to the unit at the breaker panel. This component handles line-voltage circuits, so proper insulation and secure terminal connections are required. Follow applicable local electrical codes and the equipment manufacturer's wiring diagram when installing.

Technical Specifications

• Function: Fan and Heat Sequencer

Standard Information

• Brand: FIRST COMPANY
• Manufacturer Part Number: FT-E143