ENGLISH
DHW defrost
87
Heater forced OFF
87
Unit and installation pipes antifreeze protection
8
7
Standard / ECO water pump operation
8
7
Electric heater or boiler emergency mode
87
DHW tank’s heater operation
8
7
! CAUTION
• 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.
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.
DSW6: Not used
Factory setting
(Do not change)
ELECTRICAL AND CONTROL SETTINGS
PMML0575 rev.2 - 03/2022
95
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