41
A6 The Watchdog “- - -”
Three horizontal dashes with no other control panel indicators illuminated is a result of
the watchdog circuitry detecting a potential destructive condition within the hot tub.
There are many conditions that can cause a watchdog error message. Except for a runaway heat
condition, most are caused by a faulty circuit board, bad hi-limit sensor, or temperature sensor. On
rare occasions a control panel or a bad transformer will cause Watchdog. Conrm this by using a test
panel and testing transformer connections on the circuit board, refer to appendix page 51.
1. Turn power to hot tub off. Verify proper resistance of hi-limit and temperature sensor (page 49).
Replace defective temperature or hi-limit sensor then retest system. If watchdog error goes away,
skip steps 2-4.
2. If the heater is not overly hot to touch and the watchdog displays an immediate dashed line error,
the circuit board is probably bad. Check transformer primary and secondary voltages (page 51)
before changing the circuit board.
3. See if the temperature in the heater has reached 118°F (48°C). If the heater got too hot, check for
ow restrictions or a sticking weir gate and correct the problem.
4. If you cannot produce the watchdog error and the hi-limit and temperature sensors check out OK,
tell the customer to call you if watchdog display reappears.
A7 Understanding Sanitizers
A. CLEARRAY
Our water purication system will begin disinfecting your water instantly.
CLEARRAY Water
Purication System is exclusive technology utilizing natural ultraviolet technology to sanitize your
water, disinfecting bacteria, viruses, and algae in portable hot tubs. The ultraviolet light otherwise
known as UV-C or germicidal light inactivates the microorganisms by disrupting the DNA so that it
cannot reproduce and is considered lifeless. The ballast is the power supply for the purication sys-
tem; it has two LED indicator lights the green indicating incoming power ow and the red indicating
the system is properly working. CLEARRAY is standard for all models.
• As the water is ltered, it passes through the CLEARRAY unit, and is exposed to UV light that
sanitizes the water.
• The combination of the CLEARRAY system and a residual sanitizer work in conjuction to keep
your water clear and clean.
B. Ozone
Oxygen is an element, and like other gaseous elements, normally exists as a pair of atoms bonded
together to make a whole molecule. Chemists therefore use the symbol O2 to speak of “oxygen mol-
ecules” rather than oxygen atoms.
In the presence of an electric discharge like lightning, three molecules of O2 can combine to form O3
known as ozone. While oxygen has no smell, ozone has a very pronounced smell in large concen-
trations. In small quantities, it causes the pleasant “fresh air” smell that laundry has when dried on a
outdoor clothesline. Some clothing dryer manufacturers have installed an ultraviolet lamp inside their
machines to give clothes that “fresh-as-all-outdoors” smell.
The technician must understand three things about ozone:
1. Ozone (O3) breaks down quickly into plain oxygen (O2).
2. Ozone kills germs.
3. Ozone is a strong oxidizer.
Because ozone breaks down quickly into oxygen (O2), a residual sanitizer must be used. There are
two choices, chlorine or bromine. While chlorine is oxidized by ozone just as quickly as bromine,
residual bromine compounds are a much better disinfectant than residual chlorine compounds. Hence
ozone and bromine team up much better to do the overall job than ozone and chlorine.
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