Run Operation; Setting Of Switches On The Setting Pcb - Hitachi SAMURAI Series Service Manual

2 Control Functions

Run operation

2.4 Run operation

2.4.1 Setting of switches on the setting PCB

1 Pump operation switch
By setting the switch ON while the module is stopped,
pump operation order is output.
2 Local / Remote switch
Switches whether the operation control of the module
is performed locally or remotely. By setting it to local
for instance during inspection or maintenance works,
an alarm is output to the remote side in case that any
operation order was input remotely.
3 Cooling / Heating switch
Selects between cooling and heating when in local
control setting. This switch allows the unit to work in
only-cooling mode (when cooling is enabled) or in
cooling/heating mode (when heating is enabled).
4 ON - OFF button
Performs as ON button for operation when in local
control setting. The OFF button is always enabled,
regardless of local/remote setting.
When OFF button is pushed the module is detached
from the group. The rest of the modules will keep
operation according to the master module settings and
input conditions.
When pushing ON button the module recovers the
operation on the group and restarts the operation
according to the needs of the system.
48 SMGB0120 rev.0 - 11/2017
Pump Operation
ON
OFF
Local
Remote
SW2
Cooling
Heating
SW3