Mitsubishi Electric CAHV-R450YA-HPB Installation & Operation Manual page 25

4. Perform an initial setup on the main unit.
(1) Set dip switches SW7-1, -2, -3, and -4 to ON (labeled A in the figure at
right).
[EEEE] will appear in LD301 (labeled B in the figure at right). *1
(2) Press and hold the push switch (SWP3) (labeled C in the figure at right)
for one second or longer.
• While the system is starting up [9999] will appear on LD301 (labeled B in
the figure at right).
(3) Set dip switches SW7-1, -2, -3, and -4 to OFF (labeled A in the figure at
right).
The start-up process is complete, and the settings for such items as
clock, peak-demand control, schedule, and thermistor settings can now
be made.
*1 If the start-up process has already been completed, [FFFF] (instead of [EEEE]) will appear when the dip switches
SW7-1, 2, 3, 4 are set to ON.
A
B
25
Main unit
LD301
SWS2
OFF ON OFF ON OFF ON
A
B
SWS1
REMOTE
OFF
LOCAL
SW4 SW5 SW6
C
SWU2 SWU1
OFF ON
SW7