Functions And Factory Settings Of The Dipswitches - Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

[ VII Control ]
VII Control

[1] Functions and Factory Settings of the Dipswitches

1. Heat source unit
(1) Control board
Switch Function
SWU 1-2 Unit address setting
For self-diagnosis/
SW1 1-10
operation monitoring
Centralized control
1
switch
Deletion of connec-
2
tion information
Deletion of error his-
3
tory SW
SW2
4 Pump down mode
5
6
Power on signal out-
7
put switch
8
9
10
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 Heat source Unit" for details.(page 143)
HWE09080
Function according to switch setting
OFF
Set to 00 or 51-100 with the dial switch
Refer to the LED monitor display on the
heat source unit board.
Without connection
to the centralized
controller
Normal control
(OC) Storage of IC/
OC error history
(OS) Storage of OS
error history
Normal control
- -
- -
During Thermo-ON
- -
- -
- -
Switch setting timing
ON OFF
Before power on
Anytime after power on
With connection to
the centralized con- Before power on
troller
Deletion Before power on
(OC) Deletion of IC/
Anytime after power on
OC error history
(When switched from OFF
(OS) Deletion of
to ON)
OS error history
After being energized and
Pump down mode while the compressor is
stopped
-
-
During Thermo-
Anytime after power on
OFF
-
-
-
- 137 -
Units that re-
quire switch
setting
Note.2
ON OC OS
C C
C C
B B
A -
C C
A -
- - -
- - -
A -
- - -
- - -
- - -
GB