Testo 550-2 Dgital Manifold Set 0563 5506 Data Sheet

6 Using the product 

 

 

13 

>  Press 

 or automatically after 30 s if no button 

was pressed. 

1.

  Press 

 several times 

2.

  Select function with 

or 

 . 

3.

  Save setting: press 

 . 

-  Measuring mode is dsplayed. 
Display Mode 

 

Refrigeration 
system 

Normal functionality of 
the digital manifold 

 

Heat pump 

Normal functionality of 
the digital manifold

 

 

Automatic mode   If the automatic mode 

is activated, the 
testo 550 digital 
manifold automatically 
changes the display of 
the high and low 
pressure. This 
automatic change 
occurs when the 
pressure on the low-
pressure side is 1 bar 
higher than the 
pressure on the high-
pressure side. During 
the change, 

 

(2 s) is shown in the 
display.  
This mode is 
especially suited to air 
conditioning systems 
which cool and heat.