Zodiac - Compressor capacitor 40 µF - B0181500A

Zodiac – Compressor capacitor 40 µF – B0181500A

The Zodiac B0181500A is a genuine OEM replacement compressor capacitor rated at 40 µF (microfarads), designed specifically for use in Zodiac Sirocco 110 heat pump units. The run capacitor is a critical electrical component within the heat pump’s compressor circuit: it provides the phase-shifted current required to start and maintain smooth, efficient operation of the compressor motor. Without a correctly rated, fully functional capacitor, the compressor may fail to start, run inefficiently, or sustain premature motor damage. Replacing a faulty or degraded capacitor with this genuine Zodiac part restores the heat pump to correct factory specification.

Technical characteristics and compatibility

This capacitor carries a capacitance value of 40 µF, which is the precise rating specified by Zodiac for the compressor circuit (designated C2) of the Sirocco 110 heat pump. Run capacitors of this type are connected in parallel with the compressor motor windings and remain energised throughout the operating cycle, as opposed to start capacitors which are only active during motor startup. The 40 µF rating must be matched exactly: an incorrect capacitance value can cause overheating, reduced efficiency, increased current draw, or compressor failure. As a genuine Zodiac factory spare part, the B0181500A is manufactured to the original electrical tolerances and safety standards required by the Sirocco 110, ensuring correct fit and reliable long-term performance. It is listed in the official Zodiac spare parts catalogue under the pool heating section and is referenced alongside complementary components such as the fan capacitor (WSG01933) and compressor contactor (WCF01113).

Suitability and application

This capacitor is intended exclusively for trained pool heating engineers and qualified technicians carrying out maintenance or repair work on the Zodiac Sirocco 110 heat pump. The Sirocco 110 is a plug-and-play, stand-alone pool heat pump that connects directly to the mains power supply and operates independently of the filtration system, making it suitable for a wide range of above-ground and in-ground residential pool installations. If your Sirocco 110 heat pump exhibits symptoms such as a compressor that hums but does not start, trips the circuit breaker, or fails to reach operating temperature, a failed run capacitor is a common cause. Replacing the capacitor with this genuine Zodiac part is a cost-effective first diagnostic step before considering compressor replacement. Always ensure mains power is fully isolated before handling any internal electrical components.