Hydro-Pro Heat Pump, Type Inverter (Type Xp26Dcsi+) exploded view & spare parts

Hydro-Pro Heat Pump, Type Inverter (Type Xp26Dcsi+) exploded view & spare parts

This page provides the complete exploded-view diagram and bill of materials (BOM) for the Hydro-Pro Heat Pump, Type Inverter — specifically the Type Xp26Dcsi+ variant, listed under Hydro-Pro factory reference 7018550. The Xp26Dcsi+ belongs to the Hydro-Pro Inverter 26 family, a single-phase pool heat pump whose variable-speed compressor and fan motor adjust output continuously to match the pool’s heating demand. Whether you are a pool owner carrying out routine maintenance or a technician tracing a fault, the numbered diagram on this page covers every major component from the electrical box through to the refrigerant circuit and water connections. Locate your part in minutes by working through the diagram and matching the position number to the corresponding row in the table below.

How to use the numbered diagram to find your part

Every call-out number printed on the diagram — from position 10 through to position 84 — corresponds directly to a numbered row in the parts list beneath it. Start by identifying the general area of the unit where your part sits: for example, the top of the cabinet for fan and motor components, the electrical box for control boards and relays, or the refrigerant circuit for valves and piping. Once you have narrowed down the area, find the matching call-out number on the diagram and read across to the description and, where available, the SKU in the parts list. Bear in mind that some positions share the same SKU — for instance, positions 63 and 70 both carry the water connection set (SKU 7014153) because the same fitting is used at both the inlet and outlet. Pay particular attention to lettered variants such as positions 27a and 27b, which represent two different LED display boards for the same physical mounting location; selecting the wrong letter will result in an incompatible part being ordered. Likewise, positions 58 and 59 are two distinct low-pressure switches with different pressure ranges, so check your unit’s existing switch markings before choosing. Where a position has no SKU listed, the part is not currently held as a separate line item — please contact us for guidance before ordering.

Main replaceable assemblies on the Hydro-Pro Heat Pump, Type Inverter (Type Xp26Dcsi+)

The Xp26Dcsi+ is built around several clearly defined sub-assemblies, each of which can be serviced independently. The air-side assembly — positions 19, 20, 21, and 18 — comprises the 50 W YDK-50-8GXX fan motor, its motor tube, the 490 mm fan blade (with a 12 mm clockwise-rotation bore), and the fan motor bracket that locates the motor within the top frame (position 14). The refrigerant circuit runs from the compressor (position 31) through the 4-way valve (position 55), electronic expansion valve (position 49), titanium heat exchanger (position 72), and fluid reservoir (position 32), connected by the various named pipe sections at positions 50–52 and 60–62. Critical refrigerant-circuit safety devices include the high-pressure switch at position 54 (rated 3.6–4.2 MPa, SKU 7024793) and two alternative low-pressure switches at positions 58 (0.1–0.3 MPa, SKU 7024791) and 59 (0.2–0.35 MPa, SKU 7024792). The water circuit connects to the pool via the water connection sets at positions 63 and 70 (both SKU 7014153), with the water flow switch at position 66 (SKU 7020258) protecting the unit from running dry, and inlet and outlet temperature sensors at positions 68 and 73. The electrical box (position 84) houses the main inverter board (position 81, SKU 7020763), the driver board for the 26/35 kW inverter (position 76, SKU 7020767), the 30 A air-conditioner relay (position 78), and associated wiring components. The control and display section (positions 26, 27a/27b, and 29) sits behind the front panel and includes the waterproof display box (position 26, SKU 7010543) paired with the appropriate LED display board. Anti-frost protection is provided by the evaporator heating belt at position 17 (230 V / 65 W / 2,000 mm, SKU 7020274) and the compressor heating belt at position 33 (230 V / 35 W / 430 mm, SKU 7020270). The temperature sensor set at position 53 (SKU 7020266) covers the ambient, pipe, and exhaust probes in a single kit using a 16×4 plug.

Choosing between variants and pack sizes

The most important variant choice on this diagram is at position 27, where the LED display board is listed in two versions: 27a (SHHCLEDMM101, SKU 7020256) is the standard inverter display, while 27b (WiFi02iMM011, SKU 7023600) is the Wi-Fi-enabled equivalent. The two boards are not interchangeable — fitting 27b in place of a 27a unit requires matching Wi-Fi infrastructure on the main board, so confirm which variant is fitted before ordering. Pressure switches at positions 58 and 59 carry different calibrated pressure ranges (0.1–0.3 MPa versus 0.2–0.35 MPa respectively); always note the range stamped on the existing switch or refer to your service documentation, as substituting one for the other will affect low-pressure protection thresholds. The water connection sets at positions 63 and 70 share the same SKU (7014153) and are physically identical, so a single spare covers both locations. For the plug fitting at position 74 (PP ½” male thread, 10 bar, SKU 0121241), verify the thread standard on your pipework before fitting, as ½” BSP and ½” NPT are superficially similar but not compatible. When ordering sealing components such as the O-ring at position 65 or the rubber rings at positions 64 and 71, note that colour coding (blue versus red) indicates which side of the heat exchanger they belong to, and fitting them in the wrong position can lead to leaks at the water connections.