Tefcold BLC3 - Auxiliary Relay Management; Defrost; Fans

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ES. OAS=0 the set point of the second compressor s the same set point of the first compressor.
OAS=5 the set point of the second compressor is SET (of first compressor) + 5;
OAS=-5 the set point of the second compressor is SET (of first compressor) - 5;
OAH Differential for second compressor: (-12.0÷12,0; ris.0,1°C/1°F, always ¹0) second compressor
cut IN is SETH+OAS+OAH. Second compressor cut out is when the temperature SETH+OAS.
OAi Probe selection for the second compressor: rP =Thermostat probe; EP = Evaporator probe; tiM:
cycle count down; i1P = insert probe 1; i2P = insert probe 2; i3P = insert probe 3.
AUXILIARY RELAY MANAGEMENT
OSt AUX output timer: (0÷255 min) time in which the AUX output stays ON. It is used when oA1 or oA2
or oA3 = tMr. With oAt = 0 the AUX relay is switched on and off only manually.
OSS Set point for AUX output, used when oA1 or oA2 or oA3 = AUS (-50÷50; ris.1 °C/ 1°F)
OSH Differential for AUX output: (-12.0÷12,0; ris.0,1°C/1°F, always ¹0) Intervention differential for the
set point of the AUX output, with OAH<0 the action is for heating, with OAH>0 it is for cooling.
COOLING, OSH >0: AUX output cut IN is OSS+OAH. Second compressor cut out is when the
temperature SETH+OAS.
HEATING, OSH <0: second compressor cut IN is OSS-OAH. Second compressor cut out is when the
temperature OSS
OSi Probe selection for the second compressor: rP =Thermostat probe; EP = Evaporator probe; tiM:
cycle count down; i1P = insert probe 1; i2P = insert probe 2; i3P = insert probe 3.
DEFROST
tdF Defrost type (not present in the XB350C): (rE= electrical heater; in = hot gas).
IdF Interval between defrost cycles: (0.1÷ 24.0; res. 10 min) Determines the time interval between the
beginning of two defrost cycles. (with 0.0 the defrost is disabled)
dtE Defrost termination temperature: (-50÷50 °C/°F) Sets the temperature measured by the evaporator
probe, which terminates the defrost. Used only if EPP =YES
MdF Maximum length for defrost: (0÷255 min) When EPP = no (timed defrost) it sets the defrost
duration, when EPP = YES (defrost termination based on temperature) it sets the maximum length
for defrost.
dFd Temperature displayed during defrost: (rt , it, SEt, dEF) rt: real temperature; it: temperature at
the start of defrost; SEt: set point; dEF: “dEF” message
Fdt Drip time: (0 ÷ 60 min) Time interval between reaching defrost termination temperature and the
restoring of the controllers' normal operation. This time allows the evaporator to eliminate water
drops that might have formed during defrost.
dAd Defrost display time out: (0÷120 min) Sets the maximum time between the end of defrost and
the restarting of the real room temperature display.
FANS
FnC Fans operating mode during the holding phase:
o-n = continuous mode, OFF during defrost;
C1n= runs in parallel with the first compressor, OFF during defrost;
C2n= runs in parallel with the second compressor, OFF during defrost;