Can I fix Balboa code LF myself?

Start with these safe checks: Turn the spa off at the breaker, clean or remove the filter, and top up the water. Open jets and valves, restore power and press any button. If LF returns with good flow, call for service.

When should I call a technician for code LF?

If LF returns with good flow, call for service. Water and electricity together can kill. Turn the equipment off at the breaker before you open anything, never touch equipment while standing in water, and stay out of the pool or spa if you feel tingling or suspect an electrical problem. Leave wiring, boards and GFCI faults to a licensed electrician or service tech.

Balboa Hot Tub Error Code LF / M017: Low flow, heater disabled

What LF means

Not enough flow through the heater, so the heater has been disabled. Fix the flow problem, then press any button to reset.

Also shown as: M017, depending on the model.

Likely causes

Dirty filter
Low water
Closed valves or jets
Airlock

Safe first checks

Turn the spa off at the breaker, clean or remove the filter, and top up the water.
Open jets and valves, restore power and press any button.

When to stop

If LF returns with good flow, call for service.

Parts that may help

Only order a part once the checks above point to it, and match the part number to your model.

Clarathon FC-2320 Spa Filter PRB14.5 C-2302$21.99

Checked against: Balboa TP500S / TP600 system user guide (42339 rev A1): message codes; Balboa Spa Touch 3 user guide: messages. Codes can differ by model and year, so confirm with your owner's manual.