What does error code OH mean on a Gecko hot tub?

Water overheat. Spa water reached 108°F. Don't enter the spa water.

Can I fix Gecko code OH myself?

Start with these safe checks: Check the water with a digital thermometer. In hot weather, take the cover off, add cold water and shorten filtration cycles. If OH continues in mild weather, call a tech.

When should I call a technician for code OH?

If OH continues in mild weather, call a tech. 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.

Gecko Hot Tub Error Code OH: Water overheat

What OH means

Spa water reached 108°F. Don't enter the spa water.

Likely causes

Hot weather
Long filtration cycles

Safe first checks

Check the water with a digital thermometer.
In hot weather, take the cover off, add cold water and shorten filtration cycles.

When to stop

If OH continues in mild weather, call a tech.

Checked against: Gecko Alliance Y-series and in.xe troubleshooting guide (9919-101313-D, July 2023). Codes can differ by model and year, so confirm with your owner's manual.