Evaporator Fans; Evaporator Fan And Digital Input; Defrost; Timed Or Probe Controlled Mode - Emerson Dixell XRB Installing And Operating Instructions

12. EVAPORATOR FANS

With FnC parameter it can be selected the fans functioning:
FnC=C-n → fans will switch ON and OFF with the compressor and not run during defrost; when
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compressor is OFF, fans will enter a duty-cycle working mode (see FoF, Fon, FF1 and Fo1 parameters).
FnC=o-n → fans will run even if the compressor is off, and not run during defrost;
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FnC=C-Y → fans will switch ON and OFF with the compressor and run during defrost; when compressor
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is OFF all fans will enter a duty-cycle working mode (see FoF, Fon, FF1 and Fo1 parameters).
FnC=o-Y → fans will run continuously also during defrost.
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After any defrost, a timed fan delay can be used for dripping phase. It can be set by using par. Fnd.
An additional parameter FSt provides the setting of temperature, detected by the evaporator probe, above
which the fans are always OFF. By using this parameter, it is possible to assure air circulation only if air
temperature is lower than FSt value.

12.1 EVAPORATOR FAN AND DIGITAL INPUT

When the digital input is configured as door switch (i1F=dor), fans and compressor status will depend on the
odC parameter value:
odC=no → normal regulation
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odC=FAn → evaporator fan OFF
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odC=CPr → compressor OFF
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odC=F-C → compressor and evaporator fan OFF
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When rrd=Y the regulation will restart after a door open alarm.

13. DEFROST

Any defrost operation can be controlled in the following way:
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EdF=rtC: by using an internal real-time clock (only for models equipped with RTC).
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EdF=in: timed defrost, in this case a new defrost will start as soon as the idF timer elapses.
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EdF=Aut: automatic management, in this case the controller will start a new defrost any time a change
from normal to energy saving mode will occur (valid if ErA=Aut).

13.1 TIMED OR PROBE CONTROLLED MODE

Two defrost modes are available: timed or controlled by the evaporator's probe. A couple of parameters is
used to control the interval between defrost cycles (idF) and its maximum length (MdF). During the defrost
cycle is possible to select some different display indications by using the dFd parameter. These modes are
available with any kind of defrost type:
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tdF=EL: electric heater defrost
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tdF=in: hot gas defrost.
1592038420 XRB30-60-70-77CH EN v1.1 2021.09.15 XRB 26/38