OEM Carrier High & Low Pressure Switch Kit HK02ZA395 / HK02ZB044 for Model PH2PNB060000AB

This OEM pressure switch kit includes both the high pressure switch (HK02ZA395) and the low pressure switch (HK02ZB044) — the factory-specified refrigerant safety switches for Carrier model PH2PNB060000AB heat pumps. These switches protect the compressor from operating outside safe refrigerant pressure limits. When either switch fails or trips, the system will lock out and refuse to run heating or cooling cycles. Common failure symptoms include the system shutting off immediately after startup, an error code indicating a pressure fault, or a unit that won't call for cooling or heating despite a valid thermostat signal.

• Specs — High Pressure Switch (HK02ZA395): Opens at 406 PSI | Closes at 300 PSI | 1/8" NPT thread | Sensata PS80 platform | 240 VAC rated | Replaces legacy part numbers including 312926-217, HK02ZA380, HK02ZA400, and HK02ZA435
• Specs — Low Pressure Switch (HK02ZB044): Opens at 7 PSI | Closes at 22 PSI | 50" lead wires | 24V | Country of origin: Mexico | OEM Carrier RCD component
• OEM vs Generic: OEM Carrier pressure switches are manufactured to exact factory tolerances and certified to EN12263, EN60730-2-6, and ENEC05 safety standards. Aftermarket alternatives frequently deviate from specified cut-in/cut-out pressures, risking compressor damage and voiding equipment warranties.
• Install difficulty: 3/5 — Requires recovering refrigerant before disconnecting high-side switch per EPA Section 608 regulations. Tools needed: manifold gauge set, torque wrench, 1/8" NPT fittings, leak detector. Always verify system pressure after reinstallation before restarting the compressor.
• Warranty: 1-year OEM factory warranty on both switches. In stock — ships same business day from our warehouse.

Compatibility: Engineered specifically for Carrier PH2PNB060000AB packaged heat pump units. Verify your model and serial number on the unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.