Balboa ML551 Quick Reference Manual

    EL/GL Series - Mach 3

Heat

Heat

Warm

Light

Warm

Jets 1

Jets 2

Light

Mode

Cool

Blower

ML551/ML554 Quick Reference Guide

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.”

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.

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.