Many modern spas include an ozonator, an important component
that’s not as widely understood as jets and blowers.
Though ozonator troubleshooting really merits an article all to
itself (and in fact, Pool & Spa News published just
article in the May 27, 2011, issue), here’s a quick
rundown of some common spa ozonator issues.
Even a functioning ozonator may not be producing ozone. An in-line
test can verify how much is being produced — these tests
involve inserting a glass ampoule into the outflow pipe, then
reading off the results. The next step is to trace the production
problem to one or more of the specific causes below.
If a UV ozonator’s bulb isn’t producing light, the fix
may be as simple as replacing the bulb. But even if the bulb is
burning, it typically nears the end of its effectiveness at
approximately three to five years of age. When taking on a spa
service account that involves an ozonator, it pays to ask the
customer how long ago they purchased the unit, and when its most
recent bulb was installed.
Corona discharge (CD) ozonators usually include an illuminated
strip that indicates the remaining life of the unit. Though they
don’t depend on bulbs, their electronic chips tend to wear
out after five years or so. The only fix for a cashed-out chip is
to replace it — manufacturer instructions will explain the
Like any other electrical component, ozonators require the proper
voltage to function effectively. If power is flowing to the unit
but it fails to turn on, it’s typically best to consult the
manufacturer and/or manual, and investigate the possibility that
the unit needs electrical repair. If the unit isn’t drawing
power, however, the problem likely lies with the nearest switch or
relay, or perhaps back at the breaker panel.
- Spa Sleuthing
Troubleshooting spa jets and blowers doesn’t need to be
complicated — but tracing problems to their causes helps
prevent improper repairs.
Pool & Spa News would like to thank the following
professionals for their contributions to this article:
Todd Slasor, owner
Robert Stuart, president
and Home Recreation Inc.
Colorado Springs, Colo.
Michael Tierney, spa manager
Aquatic Parts Co.