Display shows “LOC” or lock icon; buttons do not respond.

Safety first: No electrical hazard; this is a user setting.

• Unlock via panel: On many Hot Spring models, press and hold the Temperature Up and Down buttons together for several seconds to toggle the lock.
• Check owner’s manual: Refer to your specific model’s instructions for the exact unlock sequence.
• Inspect keypad: If buttons are unresponsive or stuck, the topside control panel may need cleaning or replacement.