Mitsubishi Electric PAC-MK34BC, Technical & Service Manual

Page: 20 / 28

20
OCH744
Switch
Step
Function
Operation in Each Switch Setting
<Initial switch setting>
Additional Information
ON
OFF
When to Set
SW1
1
Ones digit address setting SW12 Tens digit address setting
Rotary switch
How to set addresses Example: if address is "3", remain SW12 (for over 10) at "0", and match SW1
1 (for 1 to 9) with "3".
Before turning the power ON
Switch setting example. Branch box: 001 (setting No. =x)
indoor-A: 001 (=x) indoor-B: 002 (=x+1) indoor-C: 003 (=x+2) indoor-D: 004 (=x+3) indoor-E: 005 (=x+4)
SW1 Indoor unit connection
1–6
Before turning the power ON
After each indoor unit is connected to the outdoor unit, turn ON the switch corresponding to each indoor unit. For example, when the indoor units are connected to INDOOR UNIT
-A
and C, turn SW1-1
and SW1-3 to ON.
SW4 Mode selection
1
Change temperature indication
Fahrenheit temperature
Celsius temperature
Before turning the power ON
—
2
Power-supply voltage setting
220 or 230 V
240 V
Set at factory only
3
Change operation if M-NET communication error occurs.
Stop operation
Continued operation
Before turning the power ON
4
Automatic restoration when the power comes back ON.*
2
Inactive
Active
5
System type
Cooling only system
Cooling & heating system
When the outdoor unit is cooling only system, turn SW4-5 to ON.
6–7
Model setting
Refer to "Initial switch setti
ng".
—
8–10
—
—
—
SW5 Service setting
1–3
Change INDOOR UNIT
No. for
monitoring
Refer to "7-4. BRANCH BOX UNIT
OPERA
TION
MONIT
OR FUNCTION".
Can be activated at any time
—
4–6
When the cylinder unit or hydrobox is used in a house, connect the indoor unit for bed room to
A–
C port of the branch box, then
set the switches as follows:
Before turning the power ON
Port
A to C are available for setting for up to a maximum of 3 rooms.
Ports available for setting
Por
tA
Port B Port C Port D Port E
Ports available for setting
Por
tA
Port B Port C Port D Port E
1
ON OFF
2
3
4
5
6
Tens digit
0
1 2
3 4
5
67
89
SW12
Ones digit
0
1 2
3 4
5
67
89
SW1
1
OFF
ON
SW1
1
Indoor
unit A
Not connected
Connected
2
Indoor unit B
Not connected
Connected
3
Indoor unit C
Not connected
Connected
4*
1
Indoor unit D
Not connected
Connected
5*
1
Indoor unit E
Not connected
Connected
6
Not used
1
ON OFF
2
3
4
5
6
7
8
9
10
1
ON OFF
2
3
4
5
6
The black square (
■
) indicates a switch position.
*
1 P
AC-MK54BC only
*
2 Note that the automatic restoration starts after the unit has stopped once.
7-3. INTERNAL SWITCH FUNCTION TABLE
OFF
ON
SW5
4
Port A
Other
Bedroom
5
Port B
Other
Bedroom
6
Port C
Other
Bedroom