F-SERIES – VVM / SMO
These settings are made on the display on the indoor
module/control module.
Menu 5.11.1.1 - heat pump
Here, you make specific settings for the installed heat
pump.
Silent mode permitted
Setting range: yes / no
Detect compressor phase
Setting range S2125 1 x 230 V: off/on
Current limit
Setting range: 6 – 32 A
Factory setting: 32 A
blockFreq 1
Setting range: yes / no
blockFreq 2
Setting range: yes / no
Defrosting
Start manual defrosting
Setting range: on/off
Start temperature for defrost function
Setting range: -3 – 3 °C
Factory setting: -3 °C
Cut-out value activation passive defrosting
Setting range: 2 – 10 °C
Factory setting: 4 °C
Defrost more often
Setting range: Yes / No
Silent mode permitted: Here, you set whether silent
mode is to be activated for the heat pump. Please note
that you now have the option to schedule when silent
mode will be active.
The function should only be used for limited periods,
because S2125 possibly may not reach its dimensioned
output.
Detect compressor phase: This shows in which the
phase the heat pump has detected whether you have
S2125 230V~50Hz. Phase detection normally occurs
automatically in connection with start-up of the indoor
module/control module. This setting can be changed
manually.
Current limitation: Here, you set whether the current
limitation function will be activated for the heat pump,
if you have S2125 230V~50Hz. During active function,
you can limit the value of the maximum current.
BlockFreq 1: Here, you can select a frequency range
within which the heat pump is not permitted to work.
This function can be used if certain compressor speeds
cause noise disturbance in the house.
BlockFreq 2: Here, you can select a frequency range
within which the heat pump is not permitted to work.
Defrosting: Here, you can change the settings that affect
the defrost function.
Start manual defrosting: Here, you can manually start
an "active defrosting", if the function needs to be tested
for servicing or if necessary. This can be justified togeth-
er with "fan de-icing".
Start temperature for defrost function: Here, you set
the temperature (BT16) at which the defrost function
will start. The value must only be changed in consulta-
tion with the installer.
Cut-out value activation passive defrosting: Here, you
set the temperature (BT28) at which "passive defrosting"
will be activated. During passive defrosting, the ice is
melted by the energy from the ambient air. The fan is
active during passive defrosting. The value must only
be changed in consultation with the installer.
Defrost more often: Here, you activate whether defrost-
ing will occur more frequently than normal. This selec-
tion can be made if the heat pump receives an alarm
due to build-up of ice during operation caused, for ex-
ample, by snow.
Menu 4.9.7 - tools
Fan de-icing
Setting range: off/on
Continuous fan de-icing
Setting range: off/on
Fan de-icing: Here, you set whether the "fan de-icing"
function will be activated during the next "active defrost-
ing". This can be activated if ice/snow sticks to the fan,
grille or fan cone, which may be noticed due to abnormal
fan noise from S2125.
"Fan de-icing" means that the fan, grille and fan cone are
heated using hot air from the evaporator (EP1).
Continuous fan de-icing: There is the option to set recur-
ring de-icing. In this case, every tenth defrosting will be
"Fan de-icing". (This can increase annual energy consump-
tion.)
NIBE S2125Chapter 7 | Control38
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