Carrier 88RC0000CB315018 Restring Kit 318423-701 The spring return fail-safe mechanism

The spring return fail-safe mechanism ensures the valve moves to a safety position upon power loss

Reversible Rotation: Easily switch between CW and CCW rotation in the field to match system requirements

This specific element is charged and calibrated exclusively for R134a

Set it to 'O' for the majority of heat pumps (energized in cooling) or to 'B' for specific brands like Rheem or Ruud that require the changeover relay to be energized in heating

Built to original manufacturer tolerances

Carrier 88RC0000CB315018 Restring Kit 318423-701 The spring return fail-safe mechanismThe Carrier 88RC0000CB315018 Restring Kit is a purpose built 3. 5kW heating element replacement designed for Carrier heater coils and fan coil units. For technicians servicing older electric heat strips or residential fan coils, this factory authorized part provides a direct fit solution to restore thermal output without replacing the entire heater assembly. Operating at 208 230 VAC, this kit is engineered for single phase systems, ensuring the