Types Of Switch Setting And Address Setting - Mitsubishi PWFY-P36NMU-E-BU Service Handbook

[2] Types of Switch Setting and Address Setting

1. Switch setting
Type and method of switch setting
Switch setting vary depending on the system configuration. Make sure to read "[3] Examples of system connection"
before conducting electrical work. Turn off the power before setting the switch. Operating the switch while the unit is
being powered will not change the setting, and the unit will not properly function.
2. Address setting
(1) Address setting varies depending on the system configuration. See "[3] Examples of system connection"
section for details.
Unit or controller
Unit Main/sub units
MA remote controller
Outdoor unit
Auxiliary BC controller (Main)
units
BC controller (Sub)
Notes:
1. Address setting is not required for a single refrigerant system (with a few exception).
2. When setting the unit and outdoor auxiliary unit address to "100," make it "50."
3. When an address in a system overlapped with the heat source unit or BC controller (Main) address of other refrigerant system,
choose an another address within the set range that is not in use (with a few exceptions).
4. BC controller is found only in the R2 systems.
(2)
Unit port switch setting (R2 series (Factory Setting: "0"))
Make the settings for the port switch that corresponds to the connected BC (Main/Sub) controller.
When more than two ports are used, make the setting on the port with a smaller port number.
(3)
Various start-stop controls (Unit settings)
Each unit (or group of units) can be controlled individually by setting SW 1-3 and 1-4.
Function
Power ON/OFF by the Unit will go into operation regardless of its operation status before power off
plug (Note 1)
(power failure). (In approx. 5 minutes)
Automatic restoration Unit will go into operation if it was in operation when the power was turned off
after power failure
(or cut off due to power failure). (In approx. 5 minutes)
Unit will remain stopped regardless of its operation status before power off
(power failure).
(Note 1) Do not cut off power to the outdoor unit.
Cutting off the power supply to the outdoor unit will cut off the power supply to the crankcase heater and may cause the
compressor to malfunction when the unit is put back into operation.
(Note 2) Requires that the dipswitch settings for all the units in the group be made.
Address
setting range
0, 01~50
(Note 1)
No address setting required. (When operating with 2 remote controllers,
the main/sub selector switch must be set.
0, 51~100
(Note 1, 2, 3)
52~100
(Note 2, 3)
Operation of the indoor unit when the operation is resumed after the unit was stopped
Setting method
Assign the smallest address to the indoor unit to
become the main unit within the same group, and
then use sequential numbers to assign an address
to all the indoor units in the group.
If applicable, set the sub BC controllers in an R2
system in the following order:
(1) Indoor unit to be connected to the main BC controller
(2) Indoor unit to be connected to No.1 sub BC controller
(3) Indoor unit to be connected to No.2 sub BC controller
Set the address so that (1) < (2) < (3)
Use the address that equals the sum of the smallest indoor
unit address in the same refrigerant system and 50.
Use the address that equals the sum of the address of the
heat source unit in the same refrigerant system and 1.
Use the address that equals the sum of the smallest
address of the indoor unit out of all the indoor units
that are connected to the BC controller and 50.
When a sub BC controller is connected, the automatic
start up function will not be available.
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Factory
setting
00
Main
00
Setting (SW1) (Note 2)
3 4
OFF ON
ON ON
OFF OFF