Jandy Pool Heater AUX Monitor Error Code

Updated 2026-08-29 · review status: manual-verified Last verified: 2026-08-29

Quick answer

Auxiliary Monitoring Alert Auxiliary monitoring alert related to the VersaFlo bypass system (optional accessory). VersaFlo bypass configuration or adjustment needed. Check VersaFlo bypass if installed. If no VersaFlo accessory, this message can be disregarded.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What AUX Monitor means

Auxiliary Monitoring Alert Auxiliary monitoring alert related to the VersaFlo bypass system (optional accessory). VersaFlo bypass configuration or adjustment needed. Check VersaFlo bypass if installed. If no VersaFlo accessory, this message can be disregarded.

Code meaning varies by series

  • JXi 200/260/400 & LXi 250/400: AUX Monitor: advisory to check the VersaFlo (header bypass) system.

Causes, ranked

  1. 1. Check VersaFlo occasional pro-only

    Check:

    Fix:

Parts & supplies for Jandy Pool Heater: filters, control boards, sensors, and common replacement parts.

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Sources

  • PoolDial error-code reference (manual-backed) — verified 2026-08-29
  • Jandy JXi Gas-Fired Pool and Spa Heater Installation & Operation Manual (Section 10.2 Service Diagnostic Messages, 10.3 Ignition Control LED Service Codes) — verified 2026-08-29
  • PoolDial Jandy JXi troubleshooting guide (fault-code table) — verified 2026-08-29