Zodiac - Contactor Z400 TD7/TD8 12A - R0815500

Zodiac – Contactor Z400 TD7/TD8 12A – R0815500

The Zodiac R0815500 is a genuine OEM replacement contactor designed specifically for use with the Zodiac Z400 series pool heat pump controllers, compatible with the TD7 and TD8 control board variants. A contactor is an electrically controlled switch used to manage high-current circuits, and in the context of a pool heat pump, it is a critical safety and operational component. It allows the low-voltage control circuitry to safely switch on and off the high-power compressor or heater circuit, protecting both the equipment and the user from direct exposure to high-voltage switching.

This contactor is rated at 12 amperes, making it appropriate for the load demands of the Z400 series heat pump control systems. As a direct replacement part, it is engineered to match the original specification and mounting configuration within the Z400 control enclosure. The unit is built to handle the switching cycles typical of automated pool heating operation, including thermostat-triggered start/stop sequences and iAquaLink-connected scheduling commands. Correct contactor function is essential for reliable heat pump operation — a faulty or worn contactor can result in failure to start, intermittent heating, or tripped circuit protection.

Compatibility and installation context

The R0815500 contactor is confirmed compatible with Zodiac Z400 heat pump models that use the TD7 and TD8 control board configurations. It is a like-for-like internal replacement component, meaning it should be installed by a qualified technician familiar with pool heat pump electrical systems. The part slots into the existing mounting position inside the Z400 control cabinet and connects to the existing wiring harness, making the replacement process straightforward for a trained professional.

Using genuine Zodiac spare parts ensures that the replacement component meets the original electrical and mechanical tolerances, reducing the risk of premature failure or incompatibility. Non-genuine contactors of incorrect rating or footprint may cause unreliable operation or void equipment warranties.

Suitability and application

This product is intended for pool owners and service technicians who need to restore full functionality to a Zodiac Z400 heat pump that has experienced contactor failure. It is not a universal component and should only be used as a replacement within the specified Z400 TD7/TD8 models. It is suitable for both residential and light-commercial pool installations where the Z400 heat pump is deployed. If you are unsure whether your Z400 model uses the TD7 or TD8 board, consult the unit’s internal wiring diagram or contact a Zodiac-authorised service agent before ordering.