Jacuzzi Z Builder Series Mechanics And Repair page 22

low speed on the #1 pump.
When it turns the pump on it will look again at the flow/pressure switch to confirm
the switch is now closed since water movement should be sufficient to register. If
the switch is closed, the board will turn the heater on.
After a period of time it will turn the ozonator on if the board is designed for ozone
use. Many boards will turn the ozonator off if any function of the topside is
activated. This is to avoid any chance of ozone gas being extensively breathed in.
Newer editions also include a "blowout" mode. Periodically the board will turn all
the pumps and the air blower on to move water throughout the complete water
system. This assures clean, sanitized water is refreshed.
If you don't have a spa with a circulation pump the spa should periodically go into
a filter cycle. On standard models by default they filter twice a day for 2 hours or a
total of 4 hours. These cycles usually default when you first power up the spa.
Then it filters 2 hours at that point and 12 hours later. On some models you can
set a jumper on the board to increase the cycle 5 hours each time. The problem
that this can create is the spa can overheat during the summer because of
extended filtering when it would normally be off. On Premium models you can
adjust the filter time and duration from the topside control.
Jacuzzi Model Generation:
In 1995 Jacuzzi began their switchover to board with the F106/7 and the F108/9
control systems by Balboa Instruments.
The F106/7 system has "Platinium" written on the topside. It's their premier
system. From the topside you can operate all the components, program the time
and duration of the 2 cleaning cycles, and set the time. It's uses LCD Icons with
light backup to be seen at night.
The F108/9 is similar to the Platinum but with less options. It occupies the same
box but you don't have the control on the topside. They only used it for a couple
years.
When Jacuzzi introduced the "Z" series sold through home improvement stores