Hoshizaki DIM-30DE-2 Service Manual page 14

2) To clear the current model code information and enter the model setting mode, press
the up and down switches together for 15 seconds while the model code is indicated
in the display mode (see "3. [c] DISPLAY MODE").
Model setting
mode
Return to
normal mode
10
P01873-01
(Ver. 1.8D or earlier)
P01873-02
(Ver. 1.2F or earlier)
P01873-01
(Ver. 1.9A or later)
P01873-02
(Ver. 1.4A or later)