Can I fix Pentair code ERR IGN myself?

Start with these safe checks: Make sure the gas supply valve to the heater is on, and for propane, that the tank has fuel. Press HEATER OFF, then try once more. If it fails again, stop. Ignition parts are gas work for a qualified tech. If you smell gas, leave the area and call your gas supplier from outside.

When should I call a technician for code ERR IGN?

If it fails again, stop. Ignition parts are gas work for a qualified tech. If you smell gas, leave the area and call your gas supplier from outside. Smell gas? Leave right away, don't touch light switches or phones inside, and call your gas utility or 911 from outside. Never open a gas valve, burner, gas line, vent or flue connection, or bypass a safety switch. Repeated lockouts, scorching, soot, or a CO alarm mean shut it off and call a licensed gas technician.

Pentair Pool Heater Error Code ERR IGN / IGN: Ignition failure

What ERR IGN means

The ignition control module couldn't light the heater. Press HEATER OFF to clear.

Also shown as: IGN, depending on the model.

Likely causes

Gas supply valve closed
Empty propane tank
Igniter or flame sensing fault

Safe first checks

Make sure the gas supply valve to the heater is on, and for propane, that the tank has fuel.
Press HEATER OFF, then try once more.

When to stop

If it fails again, stop. Ignition parts are gas work for a qualified tech. If you smell gas, leave the area and call your gas supplier from outside.

Parts that may help

Only order a part once the checks above point to it, and match the part number to your model.

Jandy Igniter Assembly Hi-E2 (R0457503)$100.99

Checked against: Pentair MasterTemp heater installation and user's guide (Table 8: error and fault codes). Codes can differ by model and year, so confirm with your owner's manual.