Jandy Pool Heater LED Triple Flash Error Code

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

Quick answer

Ignition Lockout Ignition Lockout. Heater has made three unsuccessful attempts to fire and is in a soft lockout condition. Low gas supply, broken igniter, air in gas line, fan issues, gas valve not opening. System will auto-retry after one hour. Check gas supply, verify igniter condition, and ensure gas valve is in the ON position.

Severity: high · DIY difficulty: intermediate

Safety

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What LED Triple Flash means

Ignition Lockout Ignition Lockout. Heater has made three unsuccessful attempts to fire and is in a soft lockout condition. Low gas supply, broken igniter, air in gas line, fan issues, gas valve not opening. System will auto-retry after one hour. Check gas supply, verify igniter condition, and ensure gas valve is in the ON position.

Code meaning varies by series

  • JXi 200/260/400 & LXi 250/400: LED triple flash: ignition lockout - heater made three unsuccessful attempts to fire and is in a soft lockout condition (auto-retries after 1 hour).

Causes, ranked

  1. 1. Ignition lockout (heater has made three (3) unsuccessful attempts to fire and is in a soft lockout condition). 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