Mitsubishi Electric PURY-P120, Service Handbook

Page: 146 / 411

[
VII
Control ]
- 137 - HWE09130 GB
VII
Control
[1] Functions and Factory Settings of the Dipswitches
1. Outdoor unit
(1) Control board
1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units.
B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective.
C: The setting is effective for the unit on which the setting is made.
3) Refer to "VII [2] Controlling the Outdoor Unit" for details.(page 144)
4) Target evaporating temperature will change as shown in the table below each time SW2-9 is turned ON and OFF.
Switch Function
Function according to switch setting Switch setting timing
Units that re-
quire switch
setting
Note.2
OFF ON OFF ON OC OS
SWU 1-2 Unit address setting Set to 00 or 51-100 with the dial switch Before power on C C
SW1 1-10
For self-diagnosis/
operation monitoring Refer to the LED monitor display on the
outdoor unit board.
Anytime after power on
C C
SW2
1
Centralized control
switch
Without connection
to the centralized
controller With connection to
the centralized con-
troller
Before power on
B B
2
Deletion of connec-
tion information
Normal control Deletion Before power on
A -
3
Deletion of error his-
tory SW
(OC) Storage of IC/
OC error history (OC) Deletion of IC/
OC error history
Anytime after power on
(When switched from OFF
to ON)
C C
(OS) Storage of OS
error history (OS) Deletion of
OS error history
4 Pump down mode Normal control Pump down mode
After being energized and
while the compressor is
stopped A -
5 - - - - - -
6 - - - - - -
7
Forced defrost
(Note 3)
Normal control
Forced defrost
starts
10 minutes
after com-
pressor
startup
Anytime af-
ter power
on (When
switched
from OFF to
ON) A A
8
Defrost timer setting
(Note 3)
50 minutes 90 minutes
Anytime after power on
(When switched from OFF
to ON) B B
9
Target evaporating
temperature setting
(Note 4)
0°C [32°F]
-2°C [28°F]
/-4°C [25°F]
/-6°C [21°F] Anytime after power on
(When switched from OFF
to ON) A -
10 - - - - - -
SW2-9 OFF → ON → OFF → ON → OFF → ON
Target evaporating
temperature
0
[32 ] [32 ] [32 ] [25 ]
-2
[28 ]
0 0 -4
[21 ]
-6