1592040000 XR20-30-60-70T EN v1.5 2021.06.22 XR20-30-60-70T 15/41
End defrost temperature: (-55 to 50°C; -67 to 122°F) sets the temperature measured by the
evaporator probe (dFP), which causes the end of defrost cycle.
Interval between two successive defrost cycles: (0 to 255 hours) determines the time interval
between the beginning of two defrosting cycles.
Maximum length of defrost cycle: (0 to 255 min; 0 means no defrost) when P2P=n (no
evaporator probe presence) it sets the defrost duration, when P2P=Y (defrost end based on
evaporator temperature) it sets the maximum length for the defrost cycle.
Start defrost delay: (0 to 255 min) delay in defrost activation.
Compressor stop before starting any defrost: (0 to 900 sec) interval with compressor OFF
before activating hot gas cycle
Display during defrost: (rt; it; SP; dF) rt = real temperature; it = start defrost temperature;
SP = SET-POINT; dF = label “dF”.
Temperature display delay after any defrost cycle: (0 to 255 min) delay before updating the
temperature on the display after the end of any defrost.
Draining time: (0 to 255 min) regulation delay after finishing a defrost phase
Drain heater enabled after draining time (par. Fdt): (0 to 255 min) the relative output will stay on
after draining time.
Defrost cycle enebled at stat-up: (n; Y) enables defrost at power on.
Differential temperature during any pre-defrost phase: (-12.0 to 12.0°C; -21 to 21°F)
Defrost output deactivation delay: (0 to 255 sec)
Pre-defrost time: (0 to 255 min)
Automatic defrost (at the beginning of any energy saving mode): (n; Y) n=function disabled;
Y=function enabled
Optimized defrost: (n;Y) n = function disabled; Y = the controller needs a temperature probe
placed on the evaporator surface to monitor the presence of ice during any defrost phase.
Temperature sampling time during an optimized defrost (valid only if od2=yes): (1 to 255
sec) interval used to analyze the evaporator temperature and define the defrost phase
Type of synchronized defrost: (n; SYn; nSY) n = function disabled; SYn = synchronized, all
devices connected will start a defrost phase at the same time. nSY = de-synchronized, all devices
connected will delay the beginning of the same defrost phase.
Differential temperature for latent heating control (0.1 to 1.0 °C) to catch the latent heating
phase during any defrost
Restart regulation after dripping time, when defrost Syd = nSY: n = disabled; Y = enabled
Number of devices connected to the virtual network for random defrost (valid if Syd=rnd): (1
to 20) number of devices connected to the same network for syncro or desyncro defrost.
5.1.5 Evaporator and condenser fan configuration parameters - FAn
Probe selection for evaporator fan: (nP; P1; P2; P3; P4) nP=no probe; Px=probe “x”. Note:
P4=Probe on Hot Key plug.
Evaporator fan stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature, detected by
evaporator probe. Above this temperature value fans are always OFF. NOTE: it works only for
the evaporator fan, NOT for the condenser fan.
Evaporator fan regulator differential: (0.1 to 25.5°C; 1 to 45°F) evaporator fan will stop when the
measured temperature (from FAP) is T<FSt-HYF.
Evaporator fan operating mode: (Cn; on; CY; oY)
• Cn = runs with the compressor, duty-cycle when compressor is OFF (see FoF, Fon, FF1 and
Fo1 parameters) and OFF during defrost
• on = continuous mode, OFF during defrost
• CY = runs with the compressor, duty-cycle when compressor is OFF (see FoF, Fon, FF1 and
Fo1 parameters) and ON during defrost
• oY = continuous mode, ON during defrost
Evaporator fan delay after defrost cycle: (0 to 255 min) delay before fan activation after any
defrosts.
Differential for cyclic activation of evaporator fans: (0 to 50°C)
Evaporator fan operating mode: (Std; Fon; FoF) Std = standard mode, evaporator fan uses par
FnC; Fon = evaporator Fan always on; FoF = evaporator fan always off.
Evaporator fan controlled during defrost: (n; Y) n = evaporator fan uses par. FnC during any
defrost; Y = evaporator fan regulator is active during any defrost.
Evaporator fan ON time in normal mode (with compressor OFF): (0 to 255 min) used when
energy saving status is not active.