Pentair Pool Heater ERR IGN Error Code

Updated 2026-08-30 · review status: manual-verified · reviewed by MiniSplitDecoder Editorial Team Last verified: 2026-08-30

Check your model first

The source record does not specify an exact model family.

Match the model on your equipment label to the linked manufacturer documentation. The same code can mean different things across model families.

Quick answer

Ignition Failure Heater attempted to light 3 times and failed to establish a flame. Blower runs and igniter fires but no combustion occurs. Gas supply off or pressure too low, clogged burner orifice, cracked or fouled igniter, incorrect spark gap, failed gas valve solenoid, air in gas line after service. Verify the manual gas shutoff valve is open (handle parallel to pipe). Confirm other gas appli

Severity: high · DIY difficulty: easy

Safety

Stop at the exterior: power-cycle at the disconnect, clean the filter/basket, and check for obvious water-flow blockage. Pool heaters combine gas piping, 240 V wiring, and (on heat pumps) refrigerant — burner, control-board, and sealed-system work requires a licensed technician. If you smell gas, shut the gas valve and leave the area first.

What ERR IGN means

Ignition Failure Heater attempted to light 3 times and failed to establish a flame. Blower runs and igniter fires but no combustion occurs. Gas supply off or pressure too low, clogged burner orifice, cracked or fouled igniter, incorrect spark gap, failed gas valve solenoid, air in gas line after service. Verify the manual gas shutoff valve is open (handle parallel to pipe). Confirm other gas appliances are working. Power-cycle the heater to clear the lockout and allow a fresh retry. If gas is confirmed but ERR IGN persists, a technician must inspect the igniter and gas valve.

First checks before service

This page currently documents the safe reset triage. If the code returns, use the linked source manual or a qualified technician for code-specific diagnosis.

  1. 1. One-time fault event (power disturbance or transient sensor reading) common DIY

    Check: Power-cycle at the breaker/disconnect (or unplug for CPAP), restore, and run the system while watching for the code.

    Fix: If the code does not return after a full run cycle, the fault was transient — monitor, no repair needed.

  2. 2. Fault persists after a clean reset occasional pro only

    Check: If the code returns immediately or every session, note the conditions (startup, heating, after rain).

    Fix: A persisting code points at the component the manual assigns to this code — that repair is technician territory.

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Sources

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