LAE LCD15 Instructions For Installation And Use Manual

Thank you for having chosen an LAE electronic product. Before installing the instrument, please read this instruction booklet carefully
in order to ensure safe installation and optimum performance.

1. INSTALLATION

1.1 The LCD15, size 77x35x77 mm (WxHxD), is inserted into the panel through a hole measuring 71x29 mm and is fixed by

means of the suitable clips, by pressing gently. If fitted, check that the rubber gasket adheres to the panel perfectly, in order to prevent
debris and moisture infiltration to the back of the instrument.

1.2 The instrument should work with room temperatures between -10°.. +50°C and relative humidity between 15%.. 80% inclusive.
Supply voltage, switched powers and connection set-up should scrupulously comply with the indications given on the container. To
reduce the effects of electromagnetic disturbance, keep the sensor and signal cables well separate from the power wires.

1.3 The sensor T1 measures the air temperature and activates in the thermostat control cycle; it should be placed inside the
appliance in a point that truly represents the temperature of the stored product. The sensor T2 measures the evaporator temperature
and should be placed where there is the maximum formation of frost. If fitted, sensor T3 should be located between the condenser
fins, close to the condenser outlet.

CAUTION: should the relays have to switch a heavy load frequently, it is advisable to contact the manufacturer for indications on the lifetime of
the contacts.
Whenever products must be kept within very severe specifications or the products have considerable value, the use of a second instrument is
recommended, which activates upon or warns of any malfunction.

2. OPERATING MODES

Upon switching on, just the central line (autotest) appears on the display for approximately three seconds and the subsequent indications depend
on the operating status of the controller. TABLE 1 gives the indications associated with the various states, whereas the symbols appearing below
are explained in TABLE 2.

2.1 STANDBY. If button is pressed for 3 seconds, it allows the LCD15 to be put on a standby, or to resume output control (with
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.
Additionally, prior to display, the temperature is treated by an algorithm that allows the simulation of a thermal mass directly

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INSTRUCTIONS FOR INSTALLATION AND USE.

LCD15

0LLCD008EN

S

TANDBY

N

ORMAL

I

NFOMENUINFODATASETUPMENUPARAMETER

V

ALUE

OFF -19 T1 -20 SCL 1°C

Not Product

Air Display scale

Operating Temper. (sim.)

temperature

DEF T2 -25 SPL -25

Defrost Evaporator Minimum

temperature setpoint

REC - - - - - - SPH -18

Recovery after .... Maximum

defrost setpoint

HI TLO -19 - - - - - -

High temperature Min. stored ....

alarm temperature

- - - CND 15 - - - - - -

.... Condenser clean ....

cycle

E1 LOC NO - - - - - -

Faulty T1 probe Locked keypad

TABLE 1

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 and T3; 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 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.

2.5 D

EFROSTING. By assigning a value grater 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.

2.6 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 temperature, periodic condenser cleaning,

//

fault of

probe T1 / T2 / T3.

2.7 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.

2.7). The instrument is dispatched with a general setup and the suitability of the parameters must therefore be checked before use. 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. The setpoint SP (IISP) can be displayed and programmed even during normal operation of the
controller, by pressing button + or . The range will always remain within the limits SPL and SPH (IISL and IISH).

TABLE 2

CAUTION: upon changing the display scale SCL, it is ESSENTIAL to reconfigure the parameters related to the absolute (SPL, SPH, SP,
etc.) and differential (HYS, ATL, ATH, etc.) temperatures.

set

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set

set

set

E3

E2

E1

CL

HP

DO

LO

HI

REC

DEF

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set

INSTRUCTIONS FOR INSTALLATION AND USE.

SCL 1°C/2°C/°F Readout scale
SPL -40.. SPH [°] Minimum temperature set point

SPH SPL.. +40 [°] Maximum temperature set point

SP SPL.. SPH [°] Effective temperature set point
HYS +0.1.. +10.0 [°] Thermostat hysteresis
CRT 0.. 30 [min] Compressor rest time
CDC 0.. 10 Compressor regulation with sensor T1 failure
CSD 0.. 30 [min] Compressor stop delay from door opening
DFR 0.. 24 Defrosting frequency /24h

DLI -40.. +40 [°] Defrost end temperature
DTO 1.. 120 [min] Maximum defrosting duration
DTY OFF/ELE/GAS Defrost type

DRN 0.. 30 [min] Drain down time
DDY 0.. 60 [min] Defrosting display control

FID YES/NO Fans active during defrost
FDD -40.. +40 [°] Fan re-start delay temperature

FTC YES/NO Evaporator fan timed control

FPC 0.. 3 Evaporator fans ON/OFF ratio coefficient

ATL -12.. 0 [°] Low alarm differential
ATH 0.. +12 [°] High alarm differential
ATD 0.. 120 [min] Alarm temperature delay

ADO 0.. 30 [min] Door alarm delay

AHT 0.. 75 [°] Condenser alarm temperature

AHM NON/ALR/STP Condenser high temperature alarm operation

ACC 0.. 52 [weeks] Periodic condenser cleaning
HDS 1.. 5 Sensitivity function eco/heavy duty

IISM NON/MAN/HDD 2nd set switching mode

IISL -40.. IISH [°] Minimum 2nd temperature set
IISH IISL.. +40 [°] Maximum 2nd temperature set
IISP IISL.. IISH [°] Effective 2nd temperature set
IIHY +0.1.. +10.0 [°] Hysteresis of 2nd temperature set
IIDF 0.. 24 Defrosting frequency /24h in mode 2

IIFT YES/NO Evaporator fan timed control in mode 2

SB YES/NO Button enabling
DS YES/NO Door switch enabling

OS1 -12.. +12 [°] Probe T1 offset

T2 YES/NO Probe T2 enabling

OS2 -12.. +12 [°] Probe T2 offset

T3 YES/NO Probe T3 enabling

OS3 -12.. +12 [°] Probe T3 offset

TLD 1.. 30 [min] Delay for min./max. temperature storage
SIM 0.. 100 Display slowdown
ADR 1.. 255 Peripheral address

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