Fluidra - Four-Way Reversing Valve for Z650iQ MD8 Heat Pump

Fluidra – Four-Way Reversing Valve for Z650iQ MD8 Heat Pump

This is the genuine Fluidra replacement four-way reversing valve for the Zodiac Z650iQ MD8 pool heat pump. Positioned at the heart of the refrigerant circuit, it controls the direction of refrigerant flow to switch the unit between heating, cooling, and defrost operation. Replacing a faulty reversing valve restores full functionality and efficiency to your heat pump.

How It Works

The four-way reversing valve has four refrigerant line connections and two switching states, controlled by an integrated solenoid coil. By redirecting high-pressure refrigerant between the heat exchangers, it allows the Z650iQ to deliver pool heating in cooler conditions, optional water cooling in summer, and automatic evaporator defrosting in cold weather — all without any additional heating or cooling components.

Compatibility

This valve is the OEM spare part for the Fluidra Zodiac Z650iQ MD8 full-inverter pool heat pump. Always verify your model designation before ordering, as the Z650iQ range includes multiple variants (MD4 through TD12) which may require different parts. Cross-reference with your unit’s serial plate or the original exploded-parts diagram to confirm fitment.

Why Genuine Matters

As an original Fluidra component, this valve is manufactured to the exact refrigerant-pressure and solenoid-voltage tolerances specified for the Z650iQ platform. Using a non-genuine substitute risks refrigerant leaks, reduced efficiency, and potential voiding of any remaining appliance warranty. For a sealed refrigerant-circuit repair, installation by a qualified F-Gas-certified technician is strongly recommended.