Mitsubishi Electric CAHV-P500YA-HPB Service Handbook page 29

[ II Restrictions ]
2. Switch on the power to the unit.
Check for loose or incorrect wiring, and then
switch on the power to all units.
When the power is switched on, the following
codes will appear on the LED:
• [EEEE] will appear on LED1 in the MAIN
circuit board.
• [9999] will appear on LED1 in the SUB circuit
board on the main unit and both MAIN and
SUB circuits on the sub units.
If the system is not started up for five minutes
after the power is turned on (with the [EEEE]
being displayed on the MAIN circuit), an error
code [6500] or [7133] will appear on the SUB
circuit. This error code will automatically light
off once the system startup procedure is
completed.
3. Set the preset values with the switches on the MAIN circuit board.
(1) Press either one of the push switches SWP1, 2, or 3 (labeled A in the
figure at right) on the MAIN circuit board.
*[EEEE] will disappear, and an item code ([101]) will appear on LED1
(labeled B in the figure at right).
(2) Use SWP3 to toggle through the item codes, and select an item code to
change its current value. (The item codes will appear in the following
order: [101] →[102]→[104]→[105]→[107]→[101] (back to the
beginning).)
(3) Use SWP1 to increase the value and SWP2 to decrease the value.
(4) Press SWP3 to save the changed value.
Following the steps above, set the value for the following items with the switches on the MAIN circuit as necessary.
Item [107] must be set when multiple units are connected to a system.
[101] Not used
[102] Not used
[104] Not used
[105] Not used
[107] Total number of the main and sub units in the system
4. Perform an initial setup on the MAIN circuit on the main unit
(1) Set the rotary switch SWU3 on the MAIN circuit on the main unit (labeled
A in the figure at right) to "F."
[EEEE] will appear in LED1 (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 LED1 (labeled B in
the figure at right).
• When start-up is complete, a control property [0012] will appear.
• Then, five seconds later, [FFFF] will appear.
(3) Set the rotary switch SWU3 (labeled A in the figure at right) back to "0."
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 rotary switch SWU3 is set to "F."
HWE10060
Main unit (MAIN circuit)
10's digit (0) 1's digit (1) (0)
[EEEE]
- 22 -
Main unit (SUB circuit)
Sub unit (MAIN and SUB circuits)
10's digit (5) 1's digit (1) (0)
[9999]
A
B
10's digit (0) 1's digit (1) (0)
Main unit (MAIN circuit)
A
B
10's digit (0) 1's digit (1) (0)
C
Switch
Settings
depend on
the unit.
GB