Can I fix Balboa code OHS myself?

Start with these safe checks: Stay out of the water. Open the cover to let it cool. Shorten filter cycles in hot weather. If a pump runs when everything is off, power the spa down and call for service. CPSC says hot tub water should never exceed 104°F.

When should I call a technician for code OHS?

If a pump runs when everything is off, power the spa down and call for service. CPSC says hot tub water should never exceed 104°F. 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 OHS / M029: Water too hot

What OHS means

Spa water reached 110°F and functions are disabled. It auto-resets when the water drops below 108°F.

Also shown as: M029, depending on the model.

Likely causes

Long pump run times
Hot weather
Pump stuck on

Safe first checks

Stay out of the water. Open the cover to let it cool.
Shorten filter cycles in hot weather.

When to stop

If a pump runs when everything is off, power the spa down and call for service. CPSC says hot tub water should never exceed 104°F.

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.