York 331-03999-602 Stepper Valve Driver Kit

1. Advantage：

This YORK stepper valve driver kit (P/N 331-03999-602) is the electronic driver set used with EKF series stepper valve actuators (types EKF 1A / EKF 2A) in two-compressor electronic expansion valve (EEV) applications. The kit includes the driver modules supplied in anti-static shielding, ready to interface with the chiller control board to precisely position expansion valve stepper motors. The included installation guide covers wiring and setup for commercial air conditioning and industrial refrigeration applications where stepper motor valves require accurate drive signals.

2.Supply & Packaging:

Brand: YORK / Johnson Controls

Part No.: 331-03999-602

Kit Type: Two Compressor EEV Retrofit

Contents: EKF stepper valve driver modules + installation guide

Compatible Drivers: EKF 1A / EKF 2A (080G5030, 080G5035 related)

Origin: Baltimore, MD 21237, USA

Date Code: 2026-05-20

Gross Weight: ~0.35 kg

Packing: Johnson Controls Genuine Parts box

Condition: 100% new, factory sealed

3.Our Advantage

Stepper valve driver kits are specialized electronics-ordering the wrong driver set means the expansion valve will not position correctly, causing unstable superheat. We confirm the kit's application (single vs two-compressor, EKF driver type) against your chiller before shipping. The kit ships in anti-static packaging with the OEM installation guide, and our support team can help you confirm wiring connections and setup parameters for your specific unit.