OEM Carrier High Pressure Switch 395/295 PSI for Model PH2PNB024000AC (HK02ZA395 / HK02ZB044)

This OEM Carrier high pressure switch is the factory-specified refrigerant safety control for the Carrier PH2PNB024000AC heat pump. Manufactured by Sensata on the PS80 platform and certified to CE/EN60730-2-6 standards, it continuously monitors the high-side refrigerant pressure in your system. When pressure exceeds the factory cutout threshold, the switch opens to protect the compressor from catastrophic over-pressure damage. Common failure symptoms include nuisance high-pressure lockouts, the outdoor unit shutting off on warm days, or the system failing to restart after a fault code is cleared — all pointing to a faulty or out-of-spec pressurestat.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 6(6)A @ 240 VAC | PMAX 41B | 1/8" NPT male thread | Sensata PS80-03-0018 platform | OEM part numbers: HK02ZA395 & HK02ZB044
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket clone. OEM pressurestat calibration is held to tight tolerances; generic copies can drift in cutout pressure, causing premature trips or, worse, failing to protect the compressor when pressure actually exceeds safe limits.
• Install difficulty: 2/5 — Recover refrigerant before disconnecting the existing switch (required by EPA 608). Tools needed: refrigerant recovery machine, manifold gauges, adjustable wrench, Teflon tape for NPT threads, multimeter to confirm continuity. Always verify the system holds pressure after reinstallation before recharging.
• Warranty & Shipping: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time. Free shipping on orders over $99.

Compatibility: Engineered as a direct OEM replacement for Carrier model PH2PNB024000AC. Also replaces legacy Carrier part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Verify your unit's data plate and existing switch PSI rating before ordering. Our fitment team is available to confirm compatibility before you buy.