Jandy Industries RS4 Pool control panel

The Jandy AquaLink RS4 is an all‑button pool control panel that displays temperature, date/time and equipment status on a single digital screen and drives pumps, heaters and lights via wired connections. Common failures in this class include power supply dropout (often from the 120 VAC input or internal regulator), button or LCD failure due to moisture ingress, and firmware corruption leading to blank screens or erratic error codes. First‑check diagnostics: verify 120 VAC is present at the panel inlet, inspect the internal fuse and power‑regulator for continuity, and review any displayed error codes on the LCD; if no display, test the main board with a multimeter for voltage rails and look for visible burn marks or corrosion.[oss-gpt-20b]

Need your Jandy Industries repaired or tested?

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

⚙️ Fast Diagnostics – Same-day evaluation available
🔁 Reliable Turnaround – Most jobs ship within 5–10 business days
🧰 Expert Technicians – Decades of board-level experience
✅ 1-Year Warranty – Every repair fully guaranteed

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