SOURCE: our artic spa hot-tub is showing HL in the panel
HL is normally a "high limit" fault. If your filter is clean and you have sufficient flow, you may have a faulty high limit sensor. It should be mounted on the heater itself. The high limit sensor shuts the heater off if it senses excessively hot water. Check to see that you have sufficient flow, clean the filter, and make sure the filter pump is running. If everything else is running properly, you may have to replace the high limit sensor.
SOURCE: i have a artic spa 2003 ,and is flashes a flo
A "FLO (w)" indicator means that there is insufficient water flow to trip the pressure switch and allow the heater to come on. Trouble Shooting: Remove the filters and run the spa. If the indicator goes away the filters are clogged, bad. Locate the pressure switch normally threaded into the heater tube. There should be two wires attached. Remove the wires and connect them together to complete the circuit. If the indicator goes away the pressure switch is bad or requires adjustment. Replace / adjust the switch and reconnect the wires. Do not run the spa permanently without it.
SOURCE: We have a brand new
The dr error code is for "dry". Meaning that the control system is not sensing that water is flowing through the heating element.
With a new spa, and you just having drained it , it is probably an air locked pump.
What this means is that you have a small constant circulation pump with not much power, that got ait trapped in it when you drained. When you went to start back up, this "air lock" prevented the pump from fully priming.
Power down the spa at the breaker. Remove the filter element.Stick a garden hose with lots of pressure into the skimmer hole and open the hose valve to let water inject into the skimmer.
Restore power to the spa and check operation.
If after attempting this a few times you still get the code, there is an issue with your flowswitch, or with your circulation pump.
With a brand new spa, id like to hope that you just have an air lock.
Good luck
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