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The list below shows the various error messages that can appear on the main screen�
Refer to the troubleshooting and error codes section of the techbook of your hot tub control for more details�
Errors
Code Message
HL Warning! Do not enter hot tub� High-limit circuit has tripped�
OH Error� Elevated internal temperature�
FLO Persistent No Flo, all off� Check filter, pump, blockage, air lock and water level�
FLO Flo condition� Check filter, pump, blockage, air lock and water level�
Prr Warning! Do not enter hot tub� Temp probes/detect�circuit defect�
AOH Error� Elevated internal temperature�
UPL Upload� The hot tub pack does not have valid software� Please insert valid in�stick to reprogram control system�
CoE There's a problem communicating with the pack� Please check keypad connections or update pack software�
Hr Error� Hardware error detected (thermistor)�
Installation error
Upon connecting the flx�go to the control system, you may see one of two error messages:
Please follow the instructions in the message or contact your dealer for more information�
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