Copeland 998-0212-02 Unloader Valve

As a veteran technician, you know that managing head pressure during startup is critical for the longevity of Copeland 4R, 4D, 6R, and 6D Series Compressors. The Copeland 998-0212-02 Unloader Valve is the industry-standard 120V solution for providing cylinder unloading, ensuring your semi-hermetic units start under reduced load. This kit is a direct replacement part for the legacy 510-0487-02 and MZP30G2-Z01 models, featuring a 120V, 60Hz solenoid coil and high-temp gasket for a leak-free seal. Whether you are performing a compressor capacity control conversion or replacing a failed unloader solenoid, this OEM kit maintains factory refrigeration system efficiency. It is essential for minimizing in-rush current and preventing mechanical stress on the motor during frequent cycling. Don't waste time with universal fits; use the specific HVAC compressor unloader designed for Copeland's Discus and Reed valve architectures to ensure precise pressure regulation and performance.

• Broad Compatibility: Engineered specifically for Copeland 4D, 6D, 4R, and 6R series compressors.
• Complete Assembly: Includes the 120V solenoid coil, valve body, and necessary gasket for a complete service call.
• OEM Reliability: Provides the exact unloader valve replacement specifications to match original equipment flow rates.
• Optimized Startup: Reduces compressor head pressure to prevent nuisance tripping of circuit breakers and contactor wear.
• Drop-in Fit: Corrects issues previously solved by 510-0487-02 and MZP30G2-Z01 without field modifications.

Is the 998-0212-02 compatible with 240V systems?
No, this specific kit is rated for 120V/60Hz operation. For higher voltage applications, verify the coil requirements before installation.

Can I replace just the coil, or do I need the whole kit?
While the coil is often the failure point, replacing the entire unloader valve assembly ensures that the internal plunger and seat are not pitted or stuck, preventing future leaks.

What symptom indicates a failing unloader valve?
If the compressor struggles to start against pressure or "hums" without turning over, the unloader valve may be stuck closed, failing to bleed off high-side pressure.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.