Zodiac - A1 control board ZS500 TD8 - B0217400B

Zodiac – A1 control board ZS500 TD8 – B0217400B

The Zodiac B0217400B is the A1 main control board designed for the Zodiac ZS500 pool heating system. This printed circuit board serves as the central electronic brain of the ZS500 heat pump unit, managing and coordinating all operational functions including temperature regulation, compressor control, defrost cycles, fault detection, and user interface communication. As a genuine Zodiac spare part, it is manufactured to the exact specifications of the original component installed during factory assembly, ensuring full compatibility and reliable performance after replacement.

The control board receives input signals from temperature sensors, pressure switches, and the user interface panel, then processes these signals to deliver precise operational commands to the heat pump’s internal components. When the original board develops a fault — whether due to electrical surge, component aging, or moisture ingress — replacing it with this OEM board restores the unit to full factory functionality without the need to replace the entire heat pump.

Technical characteristics and compatibility

This A1 board is referenced across multiple official Zodiac catalogues including the 2018 and 2020 Zodiac Pool Care Equipment catalogues, where it is listed as a direct spare part for the ZS500 TD8 pool heating range. The part number B0217400B is the definitive SKU used by Zodiac and its authorised distributor network, Fluidra, to identify this specific board variant. The board is associated with a 25A card fuse (6.3 x 32 mm, reference B0050600A) which protects the circuit, and it works alongside ancillary components such as the V4V filter (R0800000) and pool temperature sensor (WUN03610) within the ZS500 system architecture. Installation requires electrical competence and should be carried out by a qualified technician familiar with heat pump servicing procedures.

Suitability and application

This replacement control board is intended exclusively for Zodiac ZS500 TD8 pool heat pumps. It is not a universal board and should only be fitted to the specific model for which it is listed. It is suitable for domestic swimming pool installations where the ZS500 heat pump is in use and the existing A1 board has been diagnosed as faulty. Before ordering, confirm the model designation of your heat pump unit and cross-reference the part number to ensure an exact match. This is a genuine OEM spare part sourced through the official Fluidra/Zodiac distribution network, making it the safest and most reliable replacement option for restoring heating performance.