This page covers the complete exploded-view diagram and bill of materials for the Bosta Hydro Pro Heat Pump Type PX30T\/32 (Bosta factory reference 7028291). The PX30T\/32 is a three-phase, 400-volt inverter-series swimming pool heat pump rated at 30 kW. It is designed to heat pools of up to 175 cubic metres. The unit operates in ambient temperatures as low as \u221215 \u00b0C. The diagram on this page shows all 45 numbered positions across every sub-assembly, so you can identify the exact part you need and match it to a stocked SKU in a matter of minutes.<\/p>\n
Every numbered call-out on the exploded-view diagram corresponds directly to a numbered row in the parts list below it. The quickest approach is to work from area to number to SKU: first identify the general area of the unit where the fault or wear has occurred (for example, the air-side section, the refrigerant circuit, or the electrical box), then locate the matching call-out number on the diagram, and finally look up that position number in the bill of materials to find the SKU you need to order. Bear in mind that some components share the same position number across multiple locations on the diagram \u2014 fasteners and connector types in particular can appear in several places at once, so always cross-reference the written description in the parts list rather than relying solely on position alone. Pay close attention to lettered suffixes: where a position has variants labelled, for example, as two separate SKUs under the same number (as seen at position 17, which covers both the high-pressure switch and associated temperature sensors), each variant is a distinct part with its own reference, and fitting the wrong one can affect the unit’s safety or operating logic. Where a description includes dimensional data \u2014 such as the 500 mm \u00d7 145 mm fan blade at position 4 or the 1115 \u00d7 430 mm top lid at position 11 \u2014 use those dimensions to confirm you are selecting the correct replacement before adding to your basket. If a position in the list shows no SKU, that part is not currently sold individually; contact us for guidance before attempting a substitution.<\/p>\n
The air-circuit assembly sits at the top of the unit and comprises the fan blade (position 4), the 75 W axial fan motor ZWS75-A (position 5), its mounting bracket (position 7), and the fan protection net (position 3); the fan blade SKU 7024880 and motor SKU 7024943 are both stocked and are the most commonly requested air-side parts. The evaporator (position 8) sits behind the fan assembly and is the primary heat-exchange surface between ambient air and the refrigerant. The refrigerant circuit is made up of the compressor MVB42FCBMC-L (position 29), the 4-way reverse valve (position 25), the electronic expansion valve (position 20), the three-way valve (position 19), and the fluid reservoir (position 30); these components together govern the heat-pump cycle and use R32 refrigerant, as confirmed by the pressure gauge at position 24, which is rated for R32 gas down to \u221215 \u00b0C. The inverter range is designed with larger-than-standard heat exchangers, and the digital controller allows precise control of pool water temperature. That titanium heat exchanger \u2014 position 27, SKU 7025130, specified for PIV 30\/32 \u2014 transfers heat from the refrigerant into the pool water and is suitable for both fresh and salt-water pools. Water-side safety is managed by the water flow switch at position 18 (SKU 7006471), which prevents the unit from running dry. On the electrical side, the PC1004 PCB controller at position 37 (SKU 7029493, part numbers 20000-430227 + 302020-00000028) is the main control brain for the PX30T\/32, working in conjunction with the driver board at position 33 (SKU 7024941) and the frequency controller plate at position 40 (SKU 7025126), which together manage inverter operation. The CM404 glass display at position 2 (SKU 7029494) is the user-facing interface panel, and the two-seat connector (position 34, SKU 7011019) and three-seat connector (position 38, SKU 7011025) are the wiring harness connectors most frequently needed when the electrical box is opened for servicing.<\/p>\n
Position 17 is the most important example of multiple variants sharing a single diagram reference: the high-pressure switch (SKU 7011008, rated 3.2 MPa \/ 4.4 MPa) is shown alongside two temperature sensor options \u2014 a 5K sensor (SKU 7011007) and a 50K sensor (SKU 7024867) \u2014 all at the same position. Before ordering, check your existing sensor’s resistance rating, as the 5K and 50K types are not interchangeable and will produce incorrect readings if swapped. Position 45 similarly carries several accessories associated with the fan speed control plate (SKU 7025129), including an extension cable with housing (SKU 7029497) and a winter cover (SKU 7025374); each is a separate product that must be ordered individually under its own SKU. Where filter positions 22 and 23 share the same general label but carry different position numbers, treat them as distinct parts and confirm orientation and housing dimensions before ordering. For any component described with explicit dimensional specifications \u2014 the fan blade at 500 mm \u00d7 145 mm with a 10 mm anti-clockwise bore, or the top lid at 1115 \u00d7 430 mm \u2014 those measurements are the primary compatibility check, and ordering a nominally similar part without verifying the dimensions risks a non-fit on arrival.<\/p>","protected":false},"excerpt":{"rendered":"