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dIXEL

To enter the programming mode.

To exit the programming mode.

5.1 USE OF LEDS

Each LED function is described in the following table.

LED

MODE

Function

The compressor is running

FLASHING

- Programming Phase (flashing with LED

- Anti-short cycle delay enabled

FLASHING

Programming Phase (flashing with LED

The defrost is enabled

FLASHING

Drip time in progress

The Fast Freezing cycle is enabled

- ALARM signal

- In "Pr2" indicates that the parameter is also present in "Pr1"

Continuous cycle is running

Energy saving enabled

Light on

Auxiliary relay on (CX620 only)

°C/°F

Measurement unit (CX620 only)

5.2 HOW TO SEE THE MIN TEMPERATURE

Press and release the n key.

The "Lo" message will be displayed followed by the minimum temperature recorded.

By pressing the n key or waiting for 5s the normal display will be restored.

5.3 HOW TO SEE THE MAX TEMPERATURE

Press and release the o key.

The "Hi" message will be displayed followed by the maximum temperature recorded.

By pressing the o key or waiting for 5s the normal display will be restored.

5.4 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED

To reset the stored temperature, when max or min temperature is displayed :

Press SET key until "rST" label starts blinking.

N.B. After the installation RESET the temperature stored .

5.5 HOW TO SEE AND MODIFY THE SET POINT

Push and immediately release the SET key: the display will show the Set point value;

To change the Set value push the o or n arrows within 10s.

To memorise the new set point value push the SET key again or wait 10s.

5.6 TO START A MANUAL DEFROST

Push the DEF key for more than 2 seconds and a manual defrost will start.

5.7 TO ENTER IN PARAMETERS LIST "PR1"

To enter the parameter list "Pr1" (user accessible parameters) operate as follows:

1. Enter the Programming mode by pressing the Set and DOWN key for

few seconds (

The instrument will show the first parameter present in "Pr1"

THE HIDDEN MENU

The hidden menu Includes all the parameters of the instrument.

HOW TO ENTER THE HIDDEN MENU

1. Enter the Programming mode by pressing the Set + n keys for 3s (

2. Released the keys, then push again the Set+n keys for more than 7s. The Pr2 label will be

displayed immediately followed from the HY parameter.

NOW YOU ARE IN THE HIDDEN MENU.

3. Select the required parameter.

4. Press the "SET" key to display its value

5. Use o or n to change its value.

6. Press "SET" to store the new value and move to the following parameter.

To exit: Press SET + o or wait 15s without pressing a key.

NOTE1: if none parameter is present in Pr1, after 3s the "noP" message is displayed. Keep the keys

pushed till the Pr2 message is displayed.

NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.

HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST

LEVEL AND VICEVERSA.

Each parameter present in the HIDDEN MENU can be removed or put into "THE FIRST LEVEL" (user

level) by pressing "SET + n".

In HIDDEN MENU when a parameter is present in First Level the decimal point is on.

5.8 HOW TO CHANGE THE PARAMETER VALUE

1. Enter the Programming mode.

2. Select the required parameter with o or n.

3. Press the "SET" key to display its value (

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Installing and Operating Instructions

)

and

start blinking).

and

start blinking).

and

LED starts blinking).

4. Use o or n to change its value.

5. Press "SET" to store the new value and move to the following parameter.

To exit: Press SET + UP or wait 15s without pressing a key.

NOTE: the new programming is stored even when the procedure is exited by waiting the time-out.

5.9 HOW TO LOCK THE KEYBOARD

Keep the o and n keys pressed together for more than 3 s the o and n keys.

The "POF" message will be displayed and the keyboard is locked. At this point it is

only possible the viewing of the set point or the MAX o Min temperature stored and

to switch ON and OFF the light, the auxiliary output and the instrument.

TO UNLOCK THE KEYBOARD

Keep the o and n keys pressed together for more than 3s.

5.10 ON/OFF FUNCTION (STAND BY)

By pushing the ON/OFF key, the instrument shows "OFF" for 5 sec. and the ON/OFF LED

is switched ON.

During the OFF status, all the relays are switched OFF and the regulations are stopped; if

a monitoring system is connected, it does not record the instrument data and alarms.

When the instrument is in stand by the keyboard displays "oFF".

N.B. During the OFF status the Light and AUX buttons are active.

5.11 TO SEE THE PROBE VALUES

Enter in "Pr1" level.

Parameters "dP1", "dP2" "dP3" and "dP4" display the value of probes 1, 2, 3 and 4.

6. Parameter List

REGULATION

Hy Differential: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point, always positive.

Compressor Cut IN is Set Point Plus Differential (Hy). Compressor Cut OUT is when the

temperature reaches the set point.

LS Minimum set point limit: (-50,0°C

US Maximum set point limit: (SET

110°C; SET÷230°F) Set the maximum value for set point.

PROBE INPUTS

Thermostat probe calibration (term. 1-2): ( (-12.0

offset of the thermostat probe.

P3P Third probe presence (term. 4-5): n= not present; y= present.

O3 Third probe calibration: (-12.0

P4P Fourth probe presence (term. 5-6): n= not present; y= present.

O4 Fourth probe calibration: (-12.0

fourth probe.

OdS Outputs activation delay at start up: (0÷255 min) This function is enabled at the initial start up

of the instrument and inhibits any output activation for the period of time set in the parameter.

(AUX and Light can work)

AC Anti-short cycle delay: (0÷30 min) interval between the compressor stop and the following

restart.

AC1 Time delay between turning on compressor 2 : (0÷255 sec) allows to set the delay between

turning on the first and the second compressor. It's used with oA3 = cP2.

CCt Thermostat override: (0min ÷23h 50min) allows to set the length of the continuous cycle. Can

be used, for instance, when the room is filled with new products.

CCS Set point for continuous cycle: (-50÷150°C) it sets the set point used during the continuous

cycle.

Con Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is

active in case of faulty thermostat probe. With COn=0 compressor is always OFF.

COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is off

in case of faulty thermostat probe. With COF=0 compressor is always active.

CH Type of action: CL = cooling; Ht = heating.

DISPLAY

CF Temperature measurement unit: °C = Celsius; °F = Fahrenheit . When the measurement unit

is changed the SET point and the values of the regulation parameters have to be modified

rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display.

dE = 0,1°C; in = 1 °C

rEd Remote display : select which probe is displayed by the remote display ( T620or CX620 or

V620) (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by the instrument: P1 =

Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this option

enabled); P4 = Fourth probe, SET = set point; ; dtr = not set it.

dLy Display delay: (0 ÷20.0m; risul. 10s) when the temperature increases, the display is updated of

1 °C/1°F after this time.

DEFROST

dFP Probe selection for defrost termination: nP = no probe; P1 =thermostat probe; P2 = not set it;

P3 =Third probe; P4 = Fourth probe.

dtE Defrost termination temperature: (-50,0÷110,0°C; -58÷230°F) (Enabled only when the dFP =

P3 or P4 and these probes are present) sets the temperature measured by the evaporator probe

which causes the end of defrost.

IdF Interval between defrosts: (1÷120h) Determines the time interval between the beginning of two

defrost cycles.

MdF (Maximum) duration of defrost: (0÷255 min) When P2P = n, no evaporator probe, it sets the

defrost duration, when P2P = y, defrost end based on temperature, it sets the maximum length

for defrost.

dFd Display during defrost: rt = real temperature; it = temperature reading at the defrost start;

Set = set point; dEF = "dEF" label;

dEG = "dEG" label;

dAd Defrost display time out: (0

255 min) Sets the maximum time between the end of defrost and

the restarting of the real room temperature display.

OA3 = AUS: AUXILIARY THERMOSTAT CONFIGURATION (terms. 22-23)

ACH Kind of regulation for auxiliary relay: Ht = heating; CL = cooling

SAA Set Point for auxiliary relay: (-50,0÷110,0°C; -58÷230°F) it defines the room temperature

setpoint to switch auxiliary relay.

XW20K

SET; -58°F÷SET) Sets the minimum value for the set point.

12.0°C/ -21

21°F) allows to adjust possible

12.0°C/ -21

21°F) allows to adjust offsets of the third probe.

12.0°C/ -21

21°F) allows to adjust possible offsets of the

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