Balboa Water Group ML551 Quick Reference

EL/GL Series - Mach 3

ML551/ML554 Quick Reference Guide

Light

Light

Mode

Warm

Warm

Cool/Warm

Press the “Cool” or “Warm” button once to display the set
temperature. Each time either button is pressed again, the
set temperature will increase or decrease depending on
which button is pressed. After three seconds, the LCD will
automatically display the last measured spa temperature.

HeatHeat

Jets 1

Jets 2

Blower

Cool

Initial Start-up

When your spa is first actuated, it will go into Priming mode
(after displaying some configuration information). Please

see the M-7 Installation Instruction Manual for complete
instructions on Power-up and Pump Priming.

The Priming mode will last for up to 4 minutes and then the
spa will begin to heat and maintain the water temperature
in the Standard mode. You can exit Priming mode early by
pressing “Cool” or “Warm.”

Jets 1

Press the “Jets 1” button once to turn pump 1 on or off,
and to shift between low and high speeds if equipped. If
left running, the pump will turn off after a timeout period.
The pump 1 low speed timeout on some systems may be
as long as 4 hours.

On non-circ systems, the low speed of pump 1 runs
when the blower or any other pump is on. It may also
activate for at least 1 minute every 30 minutes to detect
the spa temperature (polling) and then to heat to the set
temperature if needed, depending upon mode. When the
low speed turns on automatically, it cannot be deactivated
from the panel; however, the high speed may be started.

Mode

This button is used to switch between Standard,
Economy, and Sleep modes. Press “Mode” to enter mode
programming, press “Cool” to cycle through to desired
mode (LCD flashes until confirmed), then press “Mode” to
confirm selection.

Standard mode maintains the desired temperature. Note that
the last measured spa temperature displayed is current only
when the pump has been running for at least 1 minute.
“ ” will appear on the display momentarily when you
switch into Standard Mode.

Economy mode heats the spa to the set temperature only
during filter cycles. “ ” will appear solid when the
temperature is not current and will alternate with the
temperature when the temperature is current.

Pressing “Jets 1” while in Economy mode puts the spa in
Standard-In-Economy mode, (“ ”) which operates the
same as Standard Mode, then reverts to Economy Mode
automatically after 1 hour. During this time, pressing “Cool”
or “Warm” followed by “Light” will revert the mode to
Economy immediately.

900854

P/N 40632-80_C 02/12/2008

Sleep mode heats the spa to within 20°F (11°C) of the set
temperature only during filter cycles. “ ” will appear on
the display until mode is changed.

Standby Mode

Pressing “Cool” or “Warm” followed by “Blower” or “Jets 2”
or “Aux” will turn off all spa functions temporarily. This is
helpful when changing a filter. Pressing any button exits
Standby mode. On some systems the “Jets 1” button will
control the pump in Standby Mode (“Drain Mode”). In this
case, press any other button to exit. System will revert to
previous mode after 1 hour.

Locking Features

If this panel is used as the main panel, locking features will
not be available.

If this panel is used as a remote or additional 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
unlocked by a main panel. When the set temperature is
locked, it cannot be changed from either panel.

Additional Features

Refer to your User Guide for additional details and features
that are available with your ML551 or
ML554 panel and EL/GL Series system.

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