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Evaporator fans
5.3
The management of the evaporator fans varies according to the cycle activated, as specified below. Moreover, the
management mode varies according to whether the evaporator probe is present, which can be enabled by setting
parameter P4 to 1.
Blast chilling, blast freezing, ice cream hardening, fish sanitation, pre-cooling
The fans are always switched on and are only switched off if the cabinet temperature is equal to or higher than the
parameter F17 + F8 and/or the evaporator probe temperature is equal to or higher than the parameter F1 + F8. They
are only switched on again if the cabinet temperature falls below the F17 value and that of the evaporator probe falls
below F1.
Conservation
The operation of the fans during conservation depends on parameter F49: if set to 0 (default), they will work in
parallel with the compressor, if set to 1 they will be always active.
Thawing
Phase by phase it is possible to select whether the fans are always active or if they are to work in parallel with the
compressor or thawing heater outputs.
Defrosting
During defrosting the evaporator fans are switched off if the parameter d1 value is set to 0 or 1. They are switched on
if d1 is set to 2 or if the door is open with d1 set at 3.
At the end of the defrosting cycle, the fans remain off for the time set by parameter F3. To set an effective fan stop,
the time relative to F3 must be greater than the dripping time set by parameter d7.
Condenser fans
5.4
Output present only with u1 = condenser fan
The condenser fan management mode varies depending on the presence or otherwise of the condenser probe, which
can be enabled by setting parameter P4 to 2. The condenser fan management differs based on the following specific
situations.
Condenser probe enabled (P4=2)
The fans are always active if the compressor is switched on. If the compressor is switched off they are only activated if
the condenser probe value is above the parameter F46 + the differential of 2ºC/4ºF. They are deactivated if the
temperature is below the F46 parameter.
Condenser probe not enabled (P4S2)
The condenser fans are active if the compressor is active. They are deactivated with a delay set by parameter F47,
when the compressor is deactivated.
Condenser probe enabled but faulty
The fans are activated if the compressor is activated and they are deactivated with a delay set by parameter F47.
Defrosting
The fans are managed according to the value set by parameter F48 (on or off).
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