Not all hot tub panel codes are error codes. Some are system status codes which are used to provide you with information on how your hot tub is set to run. A few of the more common hot tub system status codes are:

Pr – Displayed when the pumps are priming, usually when the hot tub has just been turned on or reset.

SLP, SL – Message is Alternating with the Water Temperature on the Display, the Spa is Operating in the Sleep Heating Mode.

Econ, Ecn, SE – Displayed by some hot tubs when they are running in economy mode (only heating the water when the hot tub is already running a filtration cycle).

Std, Flon – Displayed by some hot tubs when they are running in standard mode (heating the water anytime the hot tub dips 2 degrees below the set temperature).

F2, F4, F6 – Displayed by some hot tubs to show how long they are set to filter. F2 = 4 hours, F4 = 8 hours and F6 = 12 hours.

Hold – Displayed when panels buttons have been hit too many times, or too quickly.

LOC, L1, L2 – Indicate that the panel has been locked. Enter the code used to lock the panel to unlock it and resume normal operation.