
USER GUIDE
System Diagnosis Guide
Parameter
Description
Factory
Value
P51
condenser fan activity in the absence of
the condenser probe (P61 = 0)
0 = in parallel with compressor
1 = on
1
P52
the temperature below which the
condenser fan is switched off in the
presence of the condenser probe (P61 =
1) and on condition that the compressor
is on (with reference to the condenser
probe); see also P54
20
P53
P52 differential
5
P54
condenser fan switch off delay on
switching off the compressor in the
presence of the condenser probe (P61 =
1); see also P52
30
P55
chill and freeze cycle completion buzzer
duration
3
P56
maximum buzzer duration during an
alarm state
15
P57
elapsed time between switching on
the compressor and pump down valve
activation (pump down in power up);
also elapsed time between deactivation
of the pump down valve and switching
off the compressor (pump down in
power down)
10
P58
defrost parameter units of
measurement
0 = P25 h, P24, P26, P28 and P35 min
1 = P25 min, P24, P26, P28 and P35 s
0
P59
reserved
0
P60
probe type
0 = NTC
1 = PTC
P61
condenser probe enabling 1 = YES
0
P62
the temperature above which the
condenser temperature alarm is
activated (with reference to the
condenser probe)
70
P63
P62 differential
10
P64
temperature below which the minimum
temperature alarm is activated during
post-chill storage, with relation to P7,
i.e., “P7 + P64” (with reference to the
cabinet probe) 0 = no alarm
0
P65
temperature above which the maximum
temperature alarm is activated during
post-chill storage, with relation to P7,
i.e. “P7 + P65” (with reference to the
cabinet probe) 0 = no alarm
0
P66
temperature below which the minimum
temperature alarm is activated during
post-freezing storage, with relation to
P8, i.e. “P8 + P66” (with reference to
the cabinet probe)
0 = no alarm
0
P67
temperature above which the maximum
temperature alarm is activated during
post-freezing storage, with relation to
P8, i.e. “P8 + P67” (with reference to
the cabinet probe)
0 = no alarm
0
P68
P64, P65, P66, and P67 differential
2
P69
storage operation start-up temperature
alarm delay
0
Parameter
Description
Factory
Value
P70
temperature alarm delay
0
P71
enable printing 1 = YES
0
P72
print interval
5
P73
HACCP alarm list deletion 1 = YES
0
P74
Baudrate 0 = 2400
1 = 4800
2 = 9600
3 = 19200
2
P75
Bit polarity 0 = no polarity 1 = even
2 = odd
2
P76
Board address
1
All GBC Trolley Units (Cycle Off Defrost)
Parameter
Description
Factory
Value
P0
unit of temperature measurement
0 = °F
1 = °C
1
P1
cabinet probe offset
0
P2
evaporator probe offset
0
P3
needle probe offset
0
P4
operational setpoint during the second
hard chill step; also, operational
setpoint during normal chilling (with
reference to the cabinet probe)
0
P5
operational setpoint during freezing
(with reference to the cabinet probe)
0
P6
operational setpoint during the first
hard chill step (with reference to the
cabinet probe)
-20
P7
operational setpoint during post-chill
storage (with reference to the cabinet
probe)
3
P8
operational setpoint during post-freeze
storage (with reference to the cabinet
probe)
3
P9
P4, P5, P6, P7, and P8 differential
1
P10
set temperature chill end temperature
(with reference to the needle probe)
3
P11
set temperature freeze end temperature
(with reference to the needle probe)
3
P12
temperature at which the hard chill
switches from the first step to the
second (with reference to the needle
probe)
20
P13
temperature above which it is not
possible to start a set temperature
operational cycle (with reference to the
needle probe)
99
P14
needle probe and the cabinet
temperature for verification of correct
needle probe insertion
0 = the test will not be performed
0
P15
duration of the second test to check
correct needle probe insertion; see also
P14
60
P16
maximum set temperature chill
duration; also timed chill duration
90
P17
maximum set temperature freeze
duration; also timed freeze duration
90
53