Jandy AquaLink 4 pool controller

The Jandy AquaLink RS‑4 is a pool control system that manages pump, heater and up to four auxiliary functions such as lighting or jets via a wired panel or handheld PDA. Common failure points in this class of controllers include power supply issues (24 V relay board), firmware corruption, or communication faults between the main unit and attached actuators. Initial checks should verify the 24‑volt DC supply is present and stable, inspect all relays for arcing or swollen capacitors, and review any error codes displayed on the panel or PDA to identify specific module failures.[oss-gpt-20b]

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We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

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