LX 56WUA400-II spa pump - 4 HP, 230 V, 2 speeds

The LX 56WUA400-II two-speed spa pump powers the jets at high speed and the circulation cycles at low speed, depending on the spa’s programming. This version, rated at 4 HP, has a 56 Frame motor and 2 in. connections.

Technical specifications

• Model: LX / Lingxiao 56WUA400-II
• Rated power: 4 HP
• Power supply: 220–240 V / 60 Hz
• Two speeds: 3450 and 1725 RPM
• Rated currents: 12 A at high speed and 4.4 A at low speed
• Motor frame: 56 Frame
• Inlet and outlet: 2 in. nominal

Operation in a compatible spa

High speed provides the flow required by the massage jets. Low speed can be used for filtration and heating in a spa designed for this configuration. The control system must support a two-speed pump.

Compatibility and replacement

Compare the 56WUA400-II reference, the high- and low-speed currents, the voltage, and the mounting points. The 56 Frame and 2 in. connections help verify fit, but the orientation and alignment of the pipes must also match. The 4 HP rating alone is not enough to determine a replacement.

Offer contents

One LX 56WUA400-II spa pump. Confirm that the unions, gaskets, and cord required for your installation are included.

Installation and commissioning

Have the replacement and electrical connection performed by a qualified technician. They must verify control compatibility, watertightness, and circuit priming before returning the system to service. Do not run the pump dry.

Need help choosing?

To confirm your choice, provide the spa model, year, and serial number, along with a photo of the plate on the current pump. Mention the 56WUA400-II reference and compare the power supply, speeds, connections, and mounting points.