Ozone generator not operating; no ozone smell or bubbles from ozone injector.

Safety first: Turn off power before working on ozone equipment. Avoid inhaling concentrated ozone.

• Check indicator: Some ozonators have a status light. If off when it should be on, the unit may be dead.
• Inspect tubing: Check ozone tubing for kinks, cracks, or water inside. Replace tubing and check valve if contaminated.
• Clean injector: Remove and soak the Mazzei-style injector in a descaling solution if clogged.
• Replace ozonator: If the unit is older than 3–5 years or shows no output, replace with a Coast Spas-compatible ozonator.