24
Evaporator fans
Control of fans in standard mode
(
CE
=0)
Fans are controlled through probe 2 (evaporator) and parameters
F0
(stop temperature) and
F1
(probe
differential).
If probe 2 is not connected or an error in the probe (
E2
) is detected, the fans continuously operate without taking
into account parameters
F0
and
F1
, but taking the remaining parameters (
F2
to
F4
) into account.
Using parameter
F2
, the status of the fans during compressor stops is defined.
Using parameter
F3
, the status of the fans during defrost is defined.
Parameter
F4
defines the fan start-up delay time after defrost (see p. 20).
Parameter
C22
defines whether fans stop when the door is opened.
Control of fans in SELFDRIVE mode
(
CE
=1)
With the SELFDRIVE mode active, fan control is performed taking into account the evaporator temperature,
compressor, frost level, the cold room temperature and if the door is open or not, optimising its operation In this
way its operation is optimised to obtain the greatest energy efficiency of the cold room.With this mode active, only
parameters
F0
,
F1
and
F4
need to be configured.
It is advisable to configure all parameters relating to the fans since, in the event of a calibration or
operating error of the SELFDRIVE mode, the controller then temporarily regulates in standard mode.
SP
SP
F0
S2
F0-F1
Fans
COOL
ON
ON
ON
ON
ON
SP+C1
F2
=1
F2
=0
1652H4A02 Ed.09