Can I fix Jandy code FAULT - HIGH LIMIT myself?

Start with these safe checks: Check flow first: pump, filter, baskets, valves. Repeated high-limit faults need a qualified tech.

When should I call a technician for code FAULT - HIGH LIMIT?

Repeated high-limit faults need a qualified tech. 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.

Jandy Pool Heater Error Code FAULT - HIGH LIMIT / HIGH LIMIT: High…

What FAULT - HIGH LIMIT means

Water in the heater is over its internal limit, or a limit switch has a fault.

Also shown as: HIGH LIMIT, depending on the model.

Likely causes

Low flow
Limit switch fault

Safe first checks

Check flow first: pump, filter, baskets, valves.

When to stop

Repeated high-limit faults need a qualified tech.

Parts that may help

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

High Limit / Temp Sensor Kit for Watkins Hot Spring No-Fault Heater$81.99

Checked against: Jandy JXi gas-fired pool and spa heater installation and operation manual (H0574300). Codes can differ by model and year, so confirm with your owner's manual.