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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.

P/N 40632-80_C   02/12/2008

900854

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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