Spa lights do not turn on, or only some LEDs work; no specific error code

Safety: Turn off power at the GFCI breaker.

• Check light button: Confirm that the light function is enabled and brightness is not set to minimum.
• Inspect fuse: In the control pack, locate and test/replace the low-voltage or lighting fuse.
• Check harness: Ensure the LED light harness is firmly plugged into the control board.
• Replace light assembly: If only one light is out, replace that LED module with an Artesian-compatible replacement.

Do not operate with water inside the light niche; correct any leaks before replacing lights.