Jandy 7178-C Circuit Board

The Jandy 7178‑C is an auxiliary power‑center PCB used in Aqualink RS and Zodiac remote‑control systems for pool equipment, handling pump operation, motor control, and power distribution. Common failures on this board include burnt or cracked traces from voltage spikes, degraded MOSFETs or relays due to overcurrent, and capacitor leakage that can cause erratic power cycling or loss of communication with the main controller. Begin diagnostics by verifying 12 V/16 V input integrity, inspecting for visual damage or burn marks on ICs and connectors, and checking relay contacts for continuity; then review any error codes displayed on the pool control panel to isolate the specific subsystem affected.[oss-gpt-20b]

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