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Balboa hot tub error code

Balboa hot tub code Sensors out of sync / M026 / M015: Sensor balance poor / out of sync

Balboa spa controls

What Sensors out of sync means

The temperature sensors are out of sync (M015: off by about 3°F; M026: out of sync for at least an hour).

Also shown as: M026, M015, depending on the model.

Likely causes

  • Sensor fault

Safe first checks

  1. Wait a few minutes to see if M015 clears.

When to stop

Balboa says call for service if it doesn't clear, and always for M026.

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: Balboa TP500S / TP600 system user guide (42339 rev A1): message codes; Balboa Spa Touch 3 user guide: messages. Codes can differ by model and year, so confirm with your owner's manual.