How to Reset a Spa Heater

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A spa heater has a high-limit reset button.

A spa or hot tub provides a form of personal relaxation known as hydrotherapy. The spa's pump and heater provide a soothing environment by circulating water through jets and increasing it to the bather's desired temperature. A spa heater may need to be reset if it has tripped or stopped working. Using the high-limit reset switch and checking all breakers and GFCI outlets can reactivate the spa's heater.

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Step 1

Locate the spa's high-limit reset. This is a red button found on many spa packs. It may be located on the heater and covered by a rubber nipple.

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Step 2

Press the high-limit reset button. When this button is tripped, it will "click" in when you reset it.

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Step 3

Turn on your spa and observe its operation. If you do not have power to the spa, you may have a tripped breaker panel switch or GFCI outlet.

Step 4

Flip the breaker panel switch on or press the reset button on the GFCI outlet to restore power. Turn the spa on. If the spa trips or stops working the second that heat demand is present, the heater element is probably the cause. You will need to replace the heater element.

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