Hitachi YUTAKI M Serie Manuel D'utilisation page 33

ELECTRICAL AND CONTROL SETTINGS
Unit and installation pipes antifreeze
protection
Standard / ECO water pump operation
Electric heater or boiler emergency mode
DHW tank's heater operation
DHW 3-way valve forced ON
!
C A U T I O N
• Never turn all DSW4 dip switch pins ON. If this happens, the software
of the unit will be removed.
• Never activate "Heater Forced OFF" and "Electric heater or boiler
emergency mode" at the same time.
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DSW5: Additional setting 3
In the cases where the outdoor unit is installed into a location
where its own outdoor ambient temperature sensor can not
give a suitable temperature measurement to the system, it
is available the 2nd outdoor ambient temperature sensor as
accessory. By means of DSW1&2 setting, the preferable sensor
for each circuit can be selected.
Factory setting
Outdoor unit sensor for circuits 1 and 2.
Outdoor unit sensor for circuit 1; Auxiliary
sensor for circuit 2.
Auxiliary sensor for circuit 1; Outdoor unit
sensor for circuit 2.
Auxiliary sensor instead of outdoor unit
sensor for both circuits.
4-20 mA setting temperature
(Only manual operation)
Use the maximum temperature value
between Two3 (boiler / heater thermistor) and
Two (water outlet thermistor) for water control
23 PMML0342B rev.1 - 03/2016
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DSW6: Not used
Factory setting
7 8
(Do not change)
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DSW7: Additional setting 4
7 8
Factory setting
7 8
Defrost for the water electric heater
7 8
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DSW8/DSW18: Not used
7 8
Factory setting
(Do not change)
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DSW15 & RSW2/ DSW16 & RSW1: Not used
Factory setting
(Do not change)
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SSW1: Remote/Local
Factory setting
(Remote operation)
Local operation
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SSW2: Heat/Cool
Factory setting
(Heat operation)
Cool and Heat operation in case of Local
9.5.4 LED indication
Name Colour
LED1 Green
LED2 Red
LED3 Red
LED4 Yellow
LED5 Green
LED6 Yellow
LED7 Yellow
Remote
Remote
Indication
Power indication
Power indication
Heat pump operation (thermo ON/OFF)
Alarm (flickering with 1 sec interval)
Not used
H-Link transmission
H-Link transmission for unit controller
Local
Local
Heat
Cool
Heat
Cool