Mitsubishi Electric City Multi CMB-WP108V-G, Service Manual

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[
VII
Control ]
- 91 - HWE1113B GB
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) When set to the capacity priority mode and if the following conditions are met, the quiet mode will terminate, and the unit will
go back into the normal operation mode.
Cooling-only/Cooling-main: Outside temperature is high or high pressure is high.
Heating-only/Heating-main: Outside temperature is low or low pressure is low. (page 26)
4) The table below summarizes the factory settings for dipswitches SW5-1 through SW5-4, and SW5-7. The factory setting for
all other dipswitches is OFF.
5) OS is described in this manual, however OS does not exist because only a single outdoor unit can be connected in an HVRF
system.
(2) INV board
Functions are switched with the following connector.
Œ
CN6 short-circuit connector is mated with the mating connector.
Œ
Leave the short-circuit connector on the mating connector during normal operation to enable error detection and protect the
equipment from damage.
Switch Function
Function according to switch setting Switch setting timing
Units that re-
quire switch
setting
Note.2
OFF ON OFF ON OC OS
SW5
1
Model selection See the table below (Note 4) Before being energized
C C
2
3
4
5
Low-noise mode
selection Capacity priority
mode(Note 3)
Low-noise mode Before being energized
A -
6 - - - - - -
7 Model selection See the table below (Note 4). Before being energized B B
8 - - - - - -
9 - - - - - -
10 Backup heating Disabled Enabled Anytime after power on A -
SW 5
model
1 2 3 4 7
OFF ON OFF OFF ON WP200 model
ON ON OFF OFF ON WP250 model
Connector Function
Function according to connec-
tor
Setting timing
Enabled Disabled Enabled Disabled
CN6 short-
circuit con-
nector
Enabling/disabling the following error
detection functions;
ACCT sensor failure
(5301 Detail No. 115)
ACCT sensor circuit failure
(5301 Detail No.117)
IPM open/ACCT erroneous wiring
(5301 Detail No. 119)
Detection of ACCT erroneous wiring
(5301 Detail No.120) Error detec-
tion enabled Error detec-
tion disable
(No load op-
eration is pos-
sible.) Anytime after power on