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Jandy pool heater error code

Jandy pool heater code SHORTED H2O SENSOR / OPEN WATER SENSOR: Water sensor fault

Jandy JXi heaters

What SHORTED H2O SENSOR means

The water temperature sensor, its wiring or connection has failed (shorted or open).

Also shown as: OPEN WATER SENSOR, depending on the model.

Likely causes

  • Sensor or wiring fault

Safe first checks

  1. Note the message and call a qualified tech.

When to stop

Sensor work is inside the heater cabinet.

Parts that may help

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

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.