parameter
SB
=YES only). An
indication on the display shows that the outputs are off permanently.
2.2 N
ORMAL
.
During normal operation, the display shows the temperature measured by probe T1, presented in the most appropriate
manner. Parameter
SCL
may be adjusted in °C with auto-range (
SCL
=1°C), in °C with 1° fixed resolution (
SCL
=2°C) or in Fahrenheit
(
SCL
=°F). The measured temperature may be corrected with a fixed offset by assigning a value other than 0 to the parameter
OS1
,
the same procedure applies to probes T2, T3, T4, which may be corrected by the respective offsets OS2, OS3, OS4. Additionally,
prior to display, the temperature is treated by an algorithm that allows the simulation of a thermal mass directly proportional to the
SIM
value. The result is a reduction in the fluctuation of the displayed value.
2.3 INFO
MENU
.
Pressing the button
and releasing it immediately activates the information selection menu. From this menu you
can display the instantaneous temperatures T1, T2, T3 and T4; the maximum (THI) and minimum (TLO) stored temperature; the total
operating time of the condenser since its last cleaning (CND) and the keypad status (LOC). The information to be displayed can be
selected sequencially, by pressing
repeatedly or quickly via the buttons
and
to scroll through the menu. Exit from the info
menu is by pressing button
or automatic after 6 seconds of not using the keypad.
In the INFO operating mode it’s also possibile to reset the recordings THI and TLO and the hour counter CND by pressing buttons
+
simultaneously while the value is displayed.
2.4 S
ETPOINT
.
The setpoint value is displayed by keeping the button
pressed for at least half second. The programming range is
within the limits
SPL
and
SPH
. When the button is released, the newly programmed value will be stored immediately. The effective
setpoint values, minimum and maximum limits, will depend on the mode selected
active at the time of the selection.
2.5 K
EYPAD LOCK
.
The keypad lock avoids undesired, potentially dangerous operations, which might be attempted when the
controllers is operating in a public place. In the INFO mode, through the buttons
and
it’s possibile to assign YES or NO to the
parameter
LOC
. With LOC=YES all keypad commands are inhibited. To resume normal operation of keypad, adjust setting so that
LOC=NO.
2.6 D
EFROST
.
By assigning a value greater than 0 to the parameter
DDY
, during defrost the indication
is displayed instead of
the temperature. In this case, after defrost and for the time programmed in DDY, the display indication
shows that the normal
thermostatic cycle is being resumed.
2.7 A
LARM
.
An anomaly in the operation is displayed through the lighting up of an abbreviation showing its cause:
/
high/low
alarm temperature in the cabinet,
door open,
condenser high pressure,
condenser high temperature,
periodic condenser
cleaning,
/ / /
, fault of probe T1 / T2 / T3 / T4.
2.8 S
ETUP
.
The setup is accessed by pressing the buttons +
in succession and keeping them pressed simultaneously for 5
seconds. The available parameters appear in TABLE 2 as shown below.
3. CONFIGURATION
The controller is configured for the system to be controlled by programming the operating parameters, that is, through the setup (see par.
2.8). In SETUP, press button
to pass from one parameter to the next, and press button
to go back. To display the value of a
parameter press
, to modify it press buttons
+
or
simultaneously. Exit from the setup is by pressing button
or automatic
after 30 seconds of not using the keypad.
HP
INSTRUCTIONS FOR INSTALLATION AND USE.
Par.
Adjustment
Function
Sect
SCL
1°C/2°C/°F
Readout scale
2.2
SPL
-40.. SPH [°]
Minimum temperature set point
2.4
SPH
SPL.. +40 [°]
Maximum temperature set point
2.4
SP
SPL.. SPH [°]
Effective set point
4.1
HYS
+0.1.. +10.0 [°]
Thermostat hysteresis
4.1
CRT
0.. 30 [min]
Compressor rest time
4.1
CT1
0.. 30 [min]
Compressor run with sensor T1 failure
4.2
CT2
0.. 30 [min]
Compressor stop with T1 failure
4.2
1)
2CD
0.. 120 [sec]
Start delay 2nd compressor
9.3
DFR
0.. 24
Defrost frequency /24h
5.1
DLI
-40.. +40 [°]
Defrost end temperature
5.3
DTO
1.. 120 [min]
Maximum defrost duration
5.3
DTY
OFF/ELE/GAS
Defrost type
5.2
DRN
0.. 30 [min]
Drain down time
5.4
DDY
0.. 60 [min]
Defrost display control
2.6
FID
YES/NO
Fans active during defrost
6.3
FDD
-40.. +40 [°]
Fan re-start delay temperature
6.4
FTO
0 …120 [min]
Evaporator fan maximum time-out
6.4
FTC
YES/NO
Evaporator fan timed control
6.1
FT1
0.. 180 [sec]
Fan stop delay
6.1
Par.
Adjustment
Function
Sect
ACC
0.. 52 [weeks]
Periodic condenser cleaning
7.5
HDS
1.. 5
Sensitivity function eco / heavy duty
9.2
IISM
NON/MAN/HDD/DI2
2nd set switching mode
9.1
2)
IISL
-40.. IISH [°]
Minimum 2nd temperature set
2.4
2)
IISH
IISL.. +40 [°]
Maximum 2nd temperature set
2.4
2)
IISP
IISL.. IISH [°]
Effective 2nd temperature set
4.1
2)
IIHY
+0.1.. +10.0 [°]
Hysteresis of 2nd temperature set
4.1
2)
IIFT
YES/NO
Evaporator fan timed control in mode 2
6.1
2)
IIDF
0.. 24
Defrost frequency /24h In mode 2
5.1
SB
YES/NO
Button enabling
2.1
DS
YES/NO
Door switch enabling
6.2
3)
CSD
0.. 30 [min]
Compressor stop delay from door opening
4.3
3)
ADO
0.. 30 [min]
Door alarm delay
7.2
DI2
NON/HPS/IISM/RDS
Function digital input DI2
9.5
LSM
NON / MAN / DOR
Light switch mode
9.3
OAU
NON/0-1/LGT/2CU/2EU/ALR
Control of AUX output
9.4
OS1
-12.. +12 [°]
probe T1 offset
2.2
T2
YES/NO
Probe T2 enabling
1.4
OS2
-12.. +12 [°]
Probe T2 offset
2.2
T3
YES/NO
Probe T3 enabling
1.4
