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Help! Heater High Limit Thermostat Tripped On Caldera


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Heater High Limit Thermostat Tripped On Caldera every 3-4 days! 4 flashing lights on control panel. I turn off the breakers for 1-2 min & turn on. Spa works great again for 3-4 days then trips. Already replaced filter & circulation pump. Help!

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Usually a flow issue. Remove your filter(s). If it stops, get new filters. If not, let us know and we'll go from there.

Sensors can be tested with an ohm meter. A bad sensor is a possibility, but less likely than a flow issue. I recommend replacing both sensors at the same time.

 

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