14. System control
14.1. System settings
[Fig. 14.1.1] (P.5)
A Unit
C Subordinate remote controller
E Refrigerant address = 01
* Set the refrigerant address using the DIP switch of the outdoor-side controller
board.
1 Wiring from the Remote Control
This wire is connected to TB5 (terminal board for remote controller) of the unit
(non-polar).
2 When a Different Refrigerant System Grouping is Used
Up to 16 refrigerant systems can be controlled as one group using the MA remote
controller.
Note:
In single refrigerant system, there is no need of wiring 2.
SW1
Function
Function table
1 Compulsory de-
<SW1>
frosting
2 Error history clear
SW1
ON
3
Refrigerant sys-
OFF
function
1 2 3 4 5 6
4
tem address set-
settings
5
ting
6
B Main remote controller
D Refrigerant address = 00
F Refrigerant address = 02
Operation according to switch setting
ON
OFF
Start
Normal
Clear
Normal
Settings for outdoor unit ad-
dresses 0 to 15
14.2. Examples of refrigerant system address
setting
Ex.
Unit
Unit
1
PRH-P200·250MYA
–
* Set the refrigerant system address of one unit to 00 for the power supply to the
remote controller.
(The refrigerant system address is set to 00 when shipped from the factory.)
Do not duplicate the refrigerant system address settings within the same system.
Unit refrigerant
Remote controller
system address
power supply unit
00
19