31
Ozone
(optional) ML400
On most systems, the ozone generator (if installed) runs
during filter cycles (except when pump 1 is operating at high
speed on a non-circ system) and during clean-up cycles. On
some systems, the ozone generator operates whenever the
pump runs.
If your system is configured with the optional ozone sup-
press feature, the ozone generator will turn off for 1 hour any
time a function button (Jets, Jets 2, Blower, etc.) is pressed.
Clean-up Cycle
(optional ML400)
When a pump or blower is turned on by a button press, a
clean-up cycle begins 30 minutes after the pump or blower
is turned off or times out. The pump and the ozone genera-
tor will run for one to four hours, depending on the system.
(On some systems, you can change this setting; see User
Preferences section.)
Freeze Protection
ML400
If the temperature sensors within the heater detect a low
enough temperature, then the pump(s) and the blower auto-
matically activate to provide freeze protection. The pump(s)
and blower will run either continuously or periodically
depending on conditions.
In colder climates, an optional additional freeze sensor may
be added to protect against freeze conditions that may not
be sensed by the standard sensors. Auxiliary freeze sensor
protection acts similarly except with the temperature thresh-
olds determined by the switch. See your dealer for details.
Locking Features
ML400
If this panel is used as the main panel, locking features will
not be available. If this panel is used as a remote or ad-
ditional panel, it will lock when the main panel is locked. To
unlock this panel, unlock the main panel.
In the same way, the set temperature can be locked and un-
locked by a main panel. When the set temperature is locked,
it cannot be changed from either panel.
Preset Filter Cycles
ML400
On all systems, the pump and the ozone generator will run
during filtration. At the start of each filter cycle, the blower
will run briefly on its highest speed to purge the air channels.
The lowest speed of any other pumps and the mister will
also run briefly. On some circ systems, pump 1 may also run
for the duration of the filter.
(Note: This panel cannot be used to program filter
cycles for systems that are programmed by time rather
than by duration. For these systems, a larger panel is
needed and the following description does not apply.)
The first filter cycle (“day”) begins 6 minutes after the spa is
powered up. The second filter cycle (“night”) begins 12 hours
later. Filter duration is programmable for 1-12 hours (“
”-“
”). The default filter duration can vary from system to
system. To program, press “Temp” then “Jets”. Press “Temp”
to select the filter duration. Press “Jets” to select the number
of filter cycles. The display will show “
” (both “day” and
“night” cycles); “ ” (day cycle only); or “ ” (“night” cycle
only). Press “Temp” to adjust, then press “Jets” to exit the
programming mode. For continuous filtration, use “
”
and “
”.
Displaying Information About Your Spa ML400
There are several pieces of information about your spa that
can be called up from the panel, but are only needed in
special cases.
To access this information, press “Temp” then “Jets”, then
“Light”. (Each press must be within 3 seconds of the previ-
ous press.) Then press “Temp” until you see “
” on the
display. Press “Jets” to see the SSID (a series of 3 numbers,
such as 100 133 10, which indicates the precise revision of the
software in your spa), followed by the Mach software ver-
sion number (such as 2.1), followed by “
” and then your
spa’s network ID number (consisting of both letters and digits
displayed in 5 steps).
If you need to see this series of numbers again, and “
” is
once again on the display, just press “Jets” again.
When done, press the “Light” button (more than once if
necessary) until you see the normal temperature display.
