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In the control logic of the Balboa spa hot tub, "LF" is usually an abbreviation for Low Flow. That is, when the control system detects that the water flow through the heater or line is below a set safety threshold, "LF" will be displayed on the control panel.

Closing methods mainly include: • Switch off the injection pump via the control panel • Adjust or close nozzles • Adjust water distribution valve • Turning off the jet water will not affect heating and base circulation • The automatic start and stop of the water jet belongs to the normal control logic of the system

In the Balboa spa hot tub, "SL" does not represent equipment failure or system malfunction. It's a normal operating mode display used to inform the user how the control system is currently operating.

In the Balboa spa hot tub's control system, DR is usually an abbreviation for "Dry" or "Dry Fire," which can also be understood as a "dry-burning protection warning."

In the Balboa hot tub's control system, EC is an abbreviation for "Economy," typically referred to as: Economy Mode / Energy-Saving Mode When a Balboa hot tub displays EC, it indicates that the equipment is currently operating in energy-saving heating mode, not the standard all-weather constant temperature mode.

In most Balboa spa hot tub systems, the high-temperature limit switch is not installed on the control panel or in a user-visible area, but rather near the heating system.

In most Balboa spa hot tub control systems, the operating mode is switched via the control panel. The basic logic is to cycle between different modes. The general operating logic includes the following steps: 1. Enter the mode setting interface 2. Locate the operating mode option 3. Switch between available modes 4. Select Standard mode to exit Eco mode