![]() This is almost caused by a faulty heater but can also be a sign of a faulty temperature sensor. These error codes are triggered when the hot tub detects the water is too cold. Cold Water Errors Common Error Codes: COL, CoLd, Cool, FP, Fr, FrE, LO If the hot tub temperature is normal, you're likely dealing with a faulty temperature sensor. If the hot tub is above 110 degrees you may have a problem with your heater or spa pack. If you notice a high limit error on your hot tub get a thermometer out and check the water temperature. These hot tub error codes are caused when the water in the hot tub gets too hot, usually over 110 degrees Fahrenheit. High Limit Errors Common Error Codes: ***, -, HiLi, HL, HOT, OH, SP-OT, Sn1, SN If the error code is still displaying, consult a professional. When there is no more air being released, tighten up the connection and restart the hot tub. To get rid of the air in the pump, simply loosen one of the pump connections. While usually a sign that there is not enough water in the hot tub, these codes will also display if there is air trapped in the pump, commonly after refilling the hot tub. These errors are caused by a lack of water in the hot tub pump. Low Water Errors Common Error Codes: dr, dy, dry, H20 To learn more about flow errors and how to troubleshoot them, consult our guide to hot tub flow errors. The cause of this lack of perceived flow can be anything from a dirty filter to a faulty spa pack. These are caused when the hot tub detects a lack of water flow through the heater element. The most common hot tub error codes are flow errors. Flow Errors Common Error Codes: FLO, Flo, FL1, LF With that in mind, here's a list of the most common hot tub error codes, and what those codes mean. Hot tub error codes are a fantastic troubleshooting tool, if you know what they mean. ![]() Fortunately, modern hot tubs will display an error code letting you know the cause of the problem. Unfortunately, there comes a time in the life of every hot tub where something breaks. Nobody likes walking out to use their hot tub, only to see that it isn't working properly. ![]()
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