Test Operation SiEN34-705
102 General Information
For setting items of (*1), refer to detailed information provided on page 112 onward.
! Setting by dip switches
Using dip switches on the PC board enables field setting shown below. However, make no
changes of factory settings except for DS1-1.
Setting item Content and objective of setting Overview of setting procedure
Service setting
1
Indoor unit fan
forced H operation
! Used to operate the indoor unit in the
stopped state in forced H operation mode.
! Set No. 5 of "Setting mode 2" to indoor unit
forced fan H.
2
Indoor unit forced
operation
! Used to operate the indoor unit in forced
operation mode.
! Set No. 6 of "Setting mode 2" to indoor unit
forced operation mode.
3
Change of targeted
evaporating
temperature
(in cooling)
! In cooling operation, used to change the
targeted evaporating temperature for
compressor capacity control.
! Select high side or low side with No. 8 of
"Setting mode 2".
4
Change of targeted
condensing
temperature
(in heating)
! In heating operation, used to change the
targeted condensing temperature for
compressor capacity control.
! Select high side or low side with No. 9 of
"Setting mode 2".
5
Setting of defrost
selection
*Heat Pump model
only
! Used to change a temperature at which the
defrost operation is initiated, thus making
the initiation easy or hard.
! Select fast side or slow side with No. 10 of
"Setting mode 2".
6
Setting of
sequential startup
! Used to start units not in sequence but
simultaneously.
! Set No. 11 of "Setting mode 2" to NONE.
7
Emergency
operation
! If the compressor has a failure, used to
prohibit the operation of compressor(s)
concerned or outdoor unit(s) concerned
and to conduct emergency operation of the
system only with operable compressor(s)
or outdoor unit(s).
! Make this setting while in "Setting mode 2".
For system with a single outdoor unit: Set
with No. 19 or 42.
For system with multiple outdoor units: Set
with No. 38, 39, or 40.
8
Additional
refrigerant
charging (*1)
! If a necessary amount of refrigerant cannot
be charged due to the stop of outdoor unit,
operate the outdoor unit and then refill
refrigerant.
! Set No. 20 of "Setting mode 2" to ON and
then charge refrigerant.
9
Refrigerant
recovery mode (*1)
! Used to recover refrigerant on site.
With operations of indoor and outdoor units
prohibited, fully open the expansion valve
of the indoor and outdoor units.
! Set No. 21 of "Setting mode 2" to ON.
10
Vacuuming mode
(*1)
! Used to conduct vacuuming on site.
Fully open the expansion valves of the
indoor and outdoor units, and energize part
of solenoid valves. Use a vacuum pump to
conduct vacuuming.
! Set No. 21 of "Setting mode 2" to ON.
11
ENECUT test
operation
! Used to forcedly turn ON the ENECUT.
(Be noted this mode is not functional with
the indoor unit remote control turned ON.)
! Set No. 24 of "Setting mode 2" to ON.
12
Power transistor
check mode
! Used for the troubleshooting of DC
compressors.
Inverter waveform output makes it possible
to judge whether a malfunction results from
the compressor or the PC board.
! Set No. 28 of "Setting mode 2" to ON.
13
Setting of model
with spare PC
board
! In order to replace the PC board by a spare
one, be sure to make model setting.
! For this setting, set the DS2-2, -3, and-4
switches on the PC board to the model
concerned.
Dipswitch
Setting item Description
No. Setting
DS1-1
ON
Cool / Heat select
Used to set cool / heat select by Cool/Heat selector
equipped with outdoor unit.
• Heat Pump model only
OFF (Factory set)
DS1-2
~DS1-4
ON
Not used Do not change the factory settings.
OFF (Factory set)
DS2-1
~4
ON
Not used Do not change the factory settings.
OFF (Factory set)
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