LE R410 A - ECA Qualified
with heater

LE COOLING STORAGE UNIT LE/LC R410A SYSTEM

Quick start up procedure

This Quick Start up section is designed to get you up and running with the minimum of fuss. Just follow these 5 simple steps.

STEP 1 Install the UniversalR, connect the correct number of probes and connect the wiring See below: 1. Table 1: parametertC settings 2. Section 5: Typical connections
STEP 2 Turn on power, THEN WITHIN 1 MINUTE COMPLETE STEPS 3, 4 AND 5.
STEP 3 Press the “DOWNkeyfor 3 seconds and the controller will automatically recognise and adjust itself to the type of probe connected. (The display briefly shows tPd followed by ntC or PtC).
STEP 4 Press the “AUX/tckey for 3 seconds and the setting of parameter tC is displayed. Use the UP or DOWN keys to adjust to required setting then confirm by pressing SET (see table 1 below).
STEP 5 Press SET for 3 seconds until the °C or °F icon starts to flash, then adjust the SET POINT using the UP or DOWN keys, then press SET again to confirm.

Notes:
1. All probes must be of the same type, either PTC or NTC;
2. Probes must be at between 50 to 60°C for auto recognition to work;
3. If 1 minute expires before you have completed quick set up, either turn OFF / On power to start set up again or enter parameter as per the instructions and adjust your parameter settings manually (see Section 9).

 

Table 1: parameter “tCsettings

Parameter tC Type of Control Required probes
1 On / Off thermostat Cooling x1
2 Off cycle defrost (timed) x1
3 Electrical / Hot Gas defrost, time initiated / time terminated x1
4 Electrical / Hot Gas defrost, time initiated / temperature terminated x2
5 Electrical / Hot Gas defrost, time initiated / temperature terminated + evap. fan delay x2
6 Double evaporators applications (similar to setting 5) x3
7 On / Off thermostat Heating x1

Not: “tCsettings 3, 4, 5 and 6 use Electrical defrost as default. Hot Gas is possible by setting parameter “tdFfor gas defrost. Settings 1,2,3, and 7 do not require that the 2nd and the 3rd probe to be fitted. YTake note of the number of probes to be connected for the selected application.Electrical / Hot Gas defrost, time initiated / temperature terminate

Button and their functions

SINGLE BUTTON FUNCTIONS

BUTTON FUNCTION
Type Controller menu: Keep this button pressed for at least 3 sec within 1 min after power on to enter the “Type Controller Menu(tC) AUX output control: Switches the AUX relay output (if enabled as such).
Manual Defrost: Keep this pressed for 3 seconds to start a manual defrost cycle. The defrost icon will illuminate. (Not possible if parameter tC = 1 or 7).
Display current set point: After pressing and releasing this button, the set point will be displayed for 5 sec. This will not allow the set point to be altered. Changing set point value: Keep this button pressed for at least 2 sec. Set point change mode is entered indicated by the small led’s flashing. Change the set point using the UP and DOWN buttons. The new value can be stored either by pressing SET button (the instrument restores temperature display) or by waiting the exit timeout to expire (15 sec).
(UP): To see the max stored temperature; in programming mode it browses the parameter codes or increases the display value.
(DOWN): To see the min stored temperature; in programming mode it browses the parameter codes or decreases the display value. Keep press 3 sec just after powering on the device (and within the first 60 sec) to start automatic probe recognising.
Keep pressed 2 sec to switch the instrument off when the parameter onF = 1.

BUTTON COMBINATION FUNCTIONS

COMBINATION FUNCTION
Lock and unlock the keyboard: Keeping both buttons pressed for 3 sec will lock or unlock the keyboard. The display will flash PoF or Pon for a few seconds to confirm locking or unlocking respectively.
Enter programming mode: Keep both buttons pressed for 3 sec. release them and then press again for 8 sec. The first label of Pr2 level will be displayed.
Exit programming mode: Press together to return to normal display.

Programming mode

US1ER PROGRAMMING LEVEL PR

To enter programming level Pr1 (user programming level), keep both SET and DOWN buttons pressed for 3 sec. The first parameter label will appear. Browse parameter list by using the UP or Down buttons. Press SET to see a parameter’s current value and UP or Down buttons to alter its value. Press Set to confirm change (the display will blink for 3 sec and then the next parameter will appear) or by waiting for the menu timeout to expire (15 sec). If no parameter is available for change in Pr1 level, a noP label will be shown.

PROTECTED PROGRAMMING LEVEL PR2 (ALL VISIBLE PARAMETERS CAN BE FOUND HERE)

First enter Pr1 level(as described above) then with any parameter label displayed keep both SET and DOWN buttons pressed for 8 sec. The first parameter label will appear. Browse parameter list by using the UP or DOWN buttons. Press SET to see a parameter’s current value and UP or DOWN buttons to alter its value. Press SET to confirm change (the display will blink for 3 sec and then the next parameter will appear) or by waiting for the menu timeout to expire (15 sec). From Pr2 level it is also possible to add or remove any parameter to / from Pr1 by pressing both SET and DOWN while its label is displayed. Accessibility of any particular parameter via Pr1 level is confirmed by the alarm LED lighting up while its label is displayed.

WARNING: If no button is pressed for 15 sec, any modified value will be stored into memory and the controller will return to the normal display mode.

 

Other features of the Controller

As well as the main digital display, there are some small icons on the front panel. These are used to monitor the loads controlled by the instrument. Each icon function is described in the following table.

Display signalling description

ICON FUNCTION MEANING
ON Light (AUX) output enabled.
ON Cooling enabled
FLASHING Antishort cycle delay in progress.
ON Fan enabled.
FLASHING Delay time on fan activation is running (Fnd > 0).
ON Defrost in progress.
FLASHING Drip time in progress (Fdt > 0) or delay on start defrosting is running (dSd > 0).
ON Auxiliary output activated.
ON Energy Saving activated.
ON Thermostat overide enabled.
ON ALARM signal: When in programming mode and in Pr2 level, this lights up notifying this parameter is also accessible in the Pr1 level.
ON All measurement units are in Celsius degrees.
FLASHING Programming mode.
ON All measurement units are in Fahrenheit degrees.
FLASHING Programming mode.

Thermostat overide (not available when parameter tC = 1 or 7)

For rapid chilling or freezing, the thermostat can be overridden by pressing the UP button until the icon lights up. The compressor will run in continuous mode, irrespective of temperature, for the time period set in parameter CCt. Normal operation will then resume automatically. The cycle can also be terminated manually by pressing the UP button again for about 3 seconds.

Defrost types

tC parameter value Action
1 or 7 No defrost.
2 Off cycle defrost by timer.
3, 4, 5 or 6 Forced type of defrost: Electrical or Hot Gas.

tdF = 0: Defrost is electrical. tdF = 1: Defrost is by hot gas.

Evaporator fan control (only when parameter tC = 5 or 6)

The fan control mode is selected by means of the “FnCparameter

FnC parameter value Action
0 Fans will cycle ON and OFF with the compressor and be off during defrost cycle.
1 Fans will run continuously, but be off during defrost cycle.
2 Will switch ON and OFF with the compressor and be on during defrost cycle (*).
3 Fans will run continuously and be on during defrost cycle (*).

(*) Note: Fans will stop if the temperature value set in parameter “FStis exceeded.

 

Parameter FSt sets the fan stop temperature. This is the maximum temperature, detected by the evaporator probe, above which the evaporator fans will stop. Leave FSt above ambient temperature during commissioning to avoid fan short cycle. After finishing the defrost phase, there is a stand still drain time, set by parameter Fdt. When this period has expired, the refrigeration cycle commence but the evaporator fans remain off until Fnd (fan delay) times out.

Special applications Dead Band Control

DEAD BAND CONTROL (COOLING & HEATING)

With [oAC = 1], the compressor relay controls cooling as normal but the 4th (auxillary) relay is used to control a heater. The value entered in parameter HY will now be set equal on both sides of the SET POINT. Example: If [HY = 1°C] that will create a C Dead Band. At [SET POINT + HY], cooling switches on. At [SET POINT HY], heating switches on. Either cooling or heating switch off when temperature returns to SET POINT.

Alarms

Message Message Mode Cause Outputs
EE Flashing Data or memory failure Alarm output ON; Other outputs unchanged.
P1 Flashing Thermostat probe failure Alarm output ON; Compressor output according to parameters Con and CoF.
P2 Alternative with room temperature Evaporator probe failure Alarm output ON; Other outputs unchanged; End defrost is timed.
P3 Alternative with room temperature Second evaporator probe failure Alarm output ON; Other outputs unchanged; End defrost is timed.
HA Alternative with room temperature High temperature alarm Alarm output ON; Other outputs unchanged.
LA Alternative with room temperature Minimum temperature alarm Alarm output ON; Other outputs unchanged.
HA2 Alternative with room temperature Condenser max temp alarm Alarm output ON; Other outputs unchanged.
LA2 Alternative with room temperature Condenser max temp alarm Alarm output ON; Other outputs unchanged.
dA Alternative with room temperature Door open alarm Alarm output ON; Outputs restart if parameter rrd = 1.
EA Alternative with room temperature Generic external alarm Alarm output ON; Other outputs unchanged.
bAL Alternative with room temperature Serious external alarm Alarm output ON; Other outputs OFF.

MUTING ALARM BUZZER & RELAY

The alarm buzzer can be muted, by pressing any button. The controller will briefly show the reset “rESlabel. Parameter tbA defines

how the alarm relay will respond to the muting of the buzzer. tbA = 0: The alarm relay will remain active until the alarm condition is rectified. tbA = 1: The alarm relay deactivates when the buzzer is muted.

In either case, the display will flash an alarm label until the condition is rectified.

ALARM “EE

The Dixell UniversalR is provided with an internal watchdog verifying data and memory integrity. Alarm “EEwill flash after detecting a failure in data or in the internal memory. In this case, the alarm output is enabled. WHAT TO DO

1. Cancel the alarm by pressing a button.
2. Check the value of the parameters and restore correct values when wrong.
3. Check the correct instrument operation and in case of further errors replace it.

ALARM RECOVERY

Probe alarms “P1”, “P2and “P3start 30 seconds after a fault in probe is detected; they automatically stop 30 seconds after the probe restarts normal operation. Check connections before replacing the probe. Temperature alarms “HAand “LAautomatically stop as soon as the thermostat temperature returns to normal values and when defrost starts. Temperature alarms “HA2and “LA2automatically stop as soon as the condenser temperature returns to normal values.

Removing security level protection

It is possible to allow access to any parameter from Pr1 level. To do this, go into Pr2 as previously described. Scroll to the label of the parameter you require and then press the SET and DOWN buttons in quick succession. The decimal point LED will be on indicating that access to this particular parameter is now possible from Pr1 level. Its label will now appear when in Pr1 programming level and its value can be altered. To restore security level protection, use the same procedure (the decimal point LED will go out after pressing both buttons).

 

Mounting

The UniversalR should be mounted in a panel, in a 29 x 71 mm hole, and fixed using the special brackets supplied. Ambient temperature for correct operation is 0 to 50°C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt of humidity (20 to 85% noncondensing RH is the recommended working range). Make sure air can freely circulate through the cooling holes slots at the rear side of the controller.

Electrical Connections

The instrument is provided with screw terminal block to connect cables with a cross section up to 2.5 mm2. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and from the power connections. Do not exceed the maximum current rating for each relay; in case of heavier loads use suitable external relay.

Probes

It is recommended to place the thermostat probe away from rapid air streams to correctly measure the average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

Technical Data

Housing: Self extinguishing ABS

Size: Frontal 32 x 74 mm; depth 70 mm

Mounting: Panel mounting in a 71 x 29 mm panel cutout

Frontal protection: IP65

Connections: Screw terminal block ? 2.5 mm2 wiring

Power supply: 12Vac/dc, 10% +15%

230Vac, 10% +15%

Power absorption: 4 VA max

Display: 3 digits, red LED, 14.2 mm high

Inputs: A maximum of 3 temperature probes, PTC or NTC type

Probes (supplied): 2 x NTC, range [40 to 105°C] with 2 metre cables

Relay outputs: Amps Resistive (Inductive)

Compressor: SPDT relay 8(3) A, 250Vac

Defrost: SPDT relay 8(3) A, 250Vac

Fans: SPST relay 7(2) A, 250Vac

Alarm: SPDT relay 8(3) A, 250Vac

Other output: Buzzer for acoustic signalling of alarms

Data storing: Nonvolatile memory (EEPROM)

Ambient temperature: 0 to 50°C

Ambient humidity: 20 to 85% (no condensing)

Storage temperature: 30 to 85°C (22 to 185°F)

Operating range: PTC: 50 to 150°C (58 to 302°F); NTC: 50 to 110°C (58 to 230°F)

Resolution: 0.1°C or F (selectable)

Accuracy at 25°C: (range 40 to 50°C) ±0.5°C ±1 digit

 

Parameter Table (and factory default settings)

IMPORTANT: Always set parameter “tCfirst. As you move between settings 1 to 7, all nonerelevant parameters will be masked. After setting “tC”, it will be possible to modify all the other relevant parameters.

WARNING!! Always switch the power OFF and then ON at the end of the programming to update any parameter changes. Make sure you connect the correct number of probes to suit the setting of parameter tC. Failure to do this will cause probe alarms.

tC setting No of Probes Type
1, 2, 3 and 7 1 Room only
4, 5 2 Room + Evaporator 1
6 3 Room + Evaporator 1 + Evaporator 2

Any probe alarms can be cleared by turning off/on power.

Description Label Adjustment Range Factory defaults with parameter “tC17
Type (category) of controller tC 1 = On/Off Thermostat
2 = Off cycle defrost 2
3 = Time/time defrost
4 = Time/temp defrost
5 = Time/temp defrost + fan delay
6 = Double evaporator defrost
7 = On/Off thermostat for heating
Set Point LS to US 10°C
Probe type PbC 0 = PTC 1 = NTC 1
Differential HY 0.1 to 25.5°C 1 to 45°F C
Minimum Set point LS 55°C to Set Point 67°F to Set Point C
Maximum Set point US Set Point to 150°C Set Point to 302°F 25°C
Antishort cycle delay AC 0 to 50 min 0
Second compressor start delay AC1 0 to 255 sec 0
Temperature alarm configuration ALC 0 = relative to Set Point 1 = Absolute 1
High temperature alarm ALU 0 to 50°C (Rel); ALL to 150°C (Abs); 0 to 90°F (Rel); ALL to 302°F (Abs); 20°C
Low temperature alarm ALL 0 to 50°C (Rel); 55°C to ALU (Abs); 0 to 90°F (Rel); 67°C to ALU (Abs); 9°C
Temperature alarm delay ALd 0 to 255 min 0
Delay of temperature alarm at start up DAo 0 to 720 min 5
Outputs activation delay at start up odS 0 to 255 min 0
Thermostat override CCt 0 to 990 min 0
Set Point for continuous cycle CCS 55 to 150°C; 67 to 302°F 10°C
Defrost delay after thermostat override dAF 0 to 255 min 15
Interval between defrosts idF 1 to 250 hours 5
Delay start of defrost dSd 0 to 255 min 0
Maximum duration of defrost NdF 0 to 255 min 10
Defrost termination temperature dtE 55 to 50°C 67 to 122°F 30°C
Maximum duration of defrost (second evaporator) NdS 0 to 255 min
Defrost termination temperature (second evaporator) dtE 55 to 50°C 67 to 122°F
Display during defrost dFd 0 = real temp. 1 = Temp. at defrost start 2 = Set point 3 = “DEFlabel 4 = “DEGlabel 3
Defrost display time out dAd 0 to 255 min 0
Defrost type (forced) tdF 0 = Electrical 1 = Hot Gas 0
Drain down time Fdt 0 to 255 min 0
First defrost after power on dPo 1 = Immediate 0 = After normal interval 0
Evaporator fan operating mode FnC 0 to 3 (1 = Fan always on apart from during defrost. See section 10 for info. On other settings)
Evaporator fan stop temperature FSt 55 to 50C 67 to 122F
Evaporator fan delay after defrost Fnd 0 to 255 min
Fan ON time Fon 0 to 15 min
Fan OFF time FoF 0 to 15 min
Thermostat probe calibration ot 12.0 to 12.0°C 21 to 21°F C
Evaporator probe presence P2P 0 = Evaporator not present 1 = Evaporator probe present
Evaporator probe calibration oE 12.0 to 12.0°C 21 to 21°F
Third probe presence P3P 0 = Third probe not present 1 = Third probe present 0
Third probe calibration o3 12.0 to 12.0°C 21 to 21°F C
Display resolution rES 0 = With decimal point 1 = No decimal point 1
Temperature measurement unit (°C/°F) CF 0 = °Celsius 1 = °Fahrenheit 0
Instrument display Lod 0 = Thermostat probe 1 = Evaporator probe 2 = Third probe 3 = SETPOINT 0
Display delay dLy 0 to 20 min 0 sec, res 10 sec 0
Type of action CH 0 = Cooling 1 = Heating 0
Compressor ON time with faulty probe Con 0 to 255 min 15
Compressor OFF time with faulty probe Cof 0 to 255 min 30
Alarm muting configuration for buzzer & relay tbA 0 = Mute buzzer only 1 = Mute buzzer and relay 1
Digital input configuration d iC 0 = Start defrost 1 = Door switch 2 = Auxiliary relay 3 = Energy saving 4 = Remote On/Off 5 = Generic alarm 6 = Serious alarm 5
Digital input polarity d iP 0 = Closed circuit 1 = Open circuit 0
Second digital input configuration i2F 0 = Start defrost 1 = Door switch 2 = Auxiliary relay 3 = Energy saving 4 = Remote On/Off 5 = Generic alarm 6 = Serious alarm 5
Second digital input polarity i2P 0 = Closed circuit 1 = Open circuit 0
Digital input delay d id 0 to 255 min 0
Digital input 2 delay d i2 0 to 255 min 0
Door open compressor/fan status odC 0 = No change 1 = Fan off 2 = Compressor off 3 = Compressor and fan off 0
Configuration of 4th relay oAC 0 = Alarm relay 1 = Heater relay (for neutral zone) 2 = Auxiliary relay 3 = Second compressor relay 4 = Light out 5 = second defrost output 1
Alarm relay polarity AoP 0 = (1112) closed with alarm 1 = (1112) open with alarm 0
Exclude temperature alarm door open dot 0 to 255 min 20
Restart regulation with door open alarm rrd 0 = No 1 = Yes 0
Low temperature alarm of condenser AL2 55 to 150°C 67 to 302°F 40°C
High temperature alarm of condenser AU2 55 to 150°C 67 to 302°F 110°C
Differential for temperature condenser alarm recovery AH2 0.1 to 25.5°C 1 to 45°F C
Condenser temperature alarm delay Ad2 0 to 254 min, 255 = nU 15
Condenser temperature alarm exclusion at start up dA2 0 to 720 min, res 10 min 90
Compressor off with low temperature alarm of condenser bLL 0 = No 1 = Yes 0
Compressor off with high temperature alarm of condenser AC2 0 = No 1 = Yes 0
Temperature deviation from normal Set point during energy saving HES 30.0 to 30°C 54 to 54°F C
ON/OFF key enabling onF 0 = Disabled 1 = Enabled 2 = Energy saving 0
Buzzer enabling bEn 0 = Disabled 1 = Enabled 0
Parameter table Ptb For factory use only
Software release number rEL Read only
Evaporator probe temperature dP2 Read only
Third probe temperature dP3 Read only

 

Parameters Their functions in detail

Controller parameters in detail

Display visualisation Description
tC Type of controller; tells the UniversalUDS which type of controller it will be operating as. 1 = On/off refrigeration thermostat 1 relay & 1 probe; 2 = Combined thermostat with off cycle defrost timer 1 relay & 1 probe; 3 = Combined thermostat with time initiated & time terminated defrost 2 relays & 1 probe; 4 = Combined thermostat with time initiated & temperature terminated defrost 2 relays & 2 probes; 5 = Combined thermostat with time initiated, temperature terminated defrost + evaporator fan control with delay after defrost 3 relays & 2 probes; 6 = Double evaporator operations: combined thermostat with time initiated, temperatures terminated defrost + evaporator fans control with delay after defrost 3 relays & 3 probes; 7 = On/off heating thermostat 1 relay & 1 probe.
PbC Probe type: configures the controller to work with PTC or NTC probes. 0 = PTC 1 = NTC
Hy Differential: (0.2°C to 12.0°C) sets the degrees above Set point at which the compressor cuts in. Note: When tC = 7 (heating applications) the tC value is automatically set below the Set Point. If the temperature decreases and reaches Set point minus differential, the regulation output is activated and then turned off when the temperature reaches the Set point value again.
LS Minimum Set Point limit: (55°C to SET or 67°F to SET) sets the lower limit of Set Point adjustment.
US Maximum Set Point limit: (SET to 150°C or SET to 302°F) sets the upper limit of Set Point adjustment.
AC Antishort cycle delay: (0 to 50 min) minimum interval between the compressor stop and the next possible restart.
AC 1 Second compressor start delay: (0 to 255 sec).
ALC Temperature alarm configuration: 0 = Related to Set Point; 1 = Absolute. Note: Related means alarms are linked to the Set point and will follow it if it is adjusted. In this case ALU and ALL set degrees over 7 under Set Point for alarm. Absolute means ALU & ALL will set fixed alarm temperatures, that are not affected by any Set Point adjustment.
ALU High temperature alarm: ALC = 0 (0 to 50°C) or (0 to 90°F); ALC = 1 (ALL to 150°C) or (ALL to 302°F).
ALL High temperature alarm: ALC = 0 (0 to 50°C) or (0 to 90°F); ALC = 1 (55°C to ALU) or (67°F to ALU).
ALd Temperature alarm delay: (0 to 255 min) time interval between an alarm condition occurring and the alarm signalling.
dAo Delay of temperature alarm at start up: (from 0 to 720min; res. 10min) time delay of any temperature alarm during pull down following “power on”.
odS outputs activation delay at start up; (0 to 255 min) time delay before any output relay activates following “power on”.
CCt Thermostat override: (0 to 990min; res. 10min) period during which the compressor will run continuously, irrespective of temperature. Setting this parameter to 0 inhibits this function.
CCS Set point for continuous cycle: (55 to 150°C or 67 to 302°F) sets the Set Point used during the continuous cycle.
dAF Defrost delay after fast freezing: (0 to 255min) time interval between the end of the thermostat override period and the start of the following defrost related to it.
idF Interval between defrosts: (0 to 255 hours) time interval between the beginning of two consecutive defrosts.
dSd Delay start of defrost: (0 to 255min) delay between reaching the defrost interval time (as defined by parameter idF) and the defrost actually starting. Used to stagger defrosts between multiple systems.
NdF (Maximum) duration of defrost: (0 to 255min) time duration of defrost when only one probe is in use, or defrost time out override when second (evaporator) probe is in use. Set it to zero to disable defrost cycles.
dtE Defrost termination temperature: (55 to 50°C or 67 to 122°F) sets the defrost termination temperature. Measured by the evaporator probe.
NdS (Maximum) length for second defrost: (0 to 255min) when P3P = 0, (not evaporator probe: timed defrost) it sets the defrost duration, when P3P = 1 (defrost end based on temperature) it sets the maximum length for defrost. Note: the P3 probe will be automatically set as second evaporator probe by the tC parameter.
dtS Second termination temperature: (55 to 50°C or 67 to 122°F) sets the temperature measured by the second evaporator probe (P3), that causes the end of the defrost.
dFd Display during defrost: 0 = Real temperature; 1 = Temperature at defrost start; 2 = Set Point; 3 = dEF label; 4 = dEG label.
dAd Defrost display time out: (0 to 250min) after a defrost, the controller will revert to current temperature display when the temperature is back down within its normal working range, or after the time set in this parameter, whichever is the sooner.
tdF Defrost type; 0 = Electrical heater; 1 = Hot gas, compressor runs during defrost.
Fdt Drain down time: (0 to 255min) drain down time. Runs concurrently with Fnd (Fan delay after defrost time).
dPo First defrost after power on: 0 = Immediately; 1 = After the idF interval time.
FnC Fan operating mode: 0 = Cycles On/Off with the compressor, OFF during defrost; 1 = Continuous mode, OFF during defrost; 2 = Cycles on/off with the compressor, ON during defrost; 3 = Continuous mode, ON during defrost.
FSt Fan stop temperature: (55 to 50°C or 67 to 122°F) temperature above which the evaporator fan stops (during the normal refrigeration cycle).
Fnd Fan delay after defrost: (0 to 255min) the time interval between the end of defrost and evaporator fans starting. Runs concurrently with Fdt (Drain down time). Always keep Fnd longer than Fdt.
Fon Fan on time: (0 to 15min) used to set an On/Off cycle of the evaporator fans while the compressor is off. With FnC = 0 or FnC = 2, it sets the evaporator fan ON cycling time when the compressor is OFF. With Fon = 0 and FoF = 0, the fans are always off.
FoF Fan off time: (0 to 15min) used to set an On/Off cycle of the evaporator fans while the compressor is off. With FnC = 0 or FnC = 2, it sets the evaporator fan OFF cycling time when the compressor is OFF. With Fon = 0 and FoF = 0, the fans are always off.
Ot Thermostat probe calibration: (12.0 to 12.0°C or 21 to 21°F) adjustment for thermostat probe (named Room) offset.
P2P Evaporator probe presence (probe named Evap on the label): 0 = Not present; 1 = Present.
oE Evaporator probe calibration: (12.0 to 12.0°C or 21 to 21°F) adjustment for evaporator probe (named Evap on the label) offset.
P3P Third probe presence (probe named Evap.2 on the label): 0 = Not present, the third input (the one signed with label “D.I.2/Pb3”) input operates as the digital input; 1 = Present, the third input (the one signed with label “D.I.2/Pb3”) input operates as the digital input.
o3 Third probe calibration: (12.0 to 12.0°C or 21 to 21°F) adjustment for third probe (named Evap.2 on the label) offset.
rE5 Display resolution: 0 = With decimal point; 1 = Without decimal point.
CF Temperature measurement unit: 0 = Celsius; 1 = Fahrenheit. Warning: If you alter the setting of parameter rES (decimal point On/Off) recheck the settings of all temperature related parameters. Set Point, HY, LS, US, ALU, ALL, dtE, FSt, ot & oe can all be affected.
Lod Probe for display: 0 = Thermostat probe; 1 = Evaporator probe; 2 = Third probe; 3 = DISPLAY ONLY SHOWS THE SET POINT.
dLy Display delay: (0 ÷ 20min 0sec; resolution 10sec) when the temperature increases, the display is updated C or F after this time.
CH Type of action: 0 = Cooling; 1 = Heating.
Con Compressor ON time with faulty probe: (0 to 255min) if there is a P1 probe failure the controller will automatically cycle the compressor On/Off according to the Con & CoF to maintain basic cooling. Con is the compressor “ONtime.
CoF Compressor OFF time with faulty probe: (0 to 255min) if there is a P1 probe failure the controller will automatically cycle the compressor On/Off according to the Con & CoF to maintain basic cooling. CoF is the compressor “OFFtime.
tbA Alarm muting: 0 = Alarm relay remains active when the alarm buzzer is muted; 1 = Alarm relay is cancelled when the alarm buzzer is muted.
d iC Digital input operating mode: configures the digital input function: 0 = Starts a defrost; 1 = Input from a door switch (see parameter odC); 2 = Activates the auxiliary relay; 3 = Starts energy saving (Control Point becomes Set Point +/value in HES); 4 = Remote On/Off (puts the controller into standby); 5 = Generic external alarm (normal regulation continues); 6 = Serious external alarm (regulation is stopped).
d iP Configurable digital input polarity: 0 = The digital input is activated by closing the circuit; 1 = The digital input is activated by opening the circuit.
i2F Second digital input operating mode: configures the second digital input function: 0 = Starts a defrost; 1 = Input from a door switch (see parameter odC); 2 = Activates the auxiliary relay; 3 = Starts energy saving (Control Point becomes Set Point +/value in HES); 4 = Remote On/Off (puts the controller into standby); 5 = Generic external alarm (normal regulation continues); 6 = Serious external alarm (regulation is stopped).
i2P Configurable second digital input polarity: 0 = The digital input is activated by closing the circuit; 1 = The digital input is activated by opening the circuit.
d id Time interval/delay for digital input 1 alarm: (0 to 255min) it defines the time delay between the detection and the subsequent signalling of the alarm.
d i2 Time interval/delay for digital input 2 alarm: (0 to 255min) it defines the time delay between the detection and the subsequent signalling of the alarm.
odC Compressor and fan status when open door: 0 = Normal; 1 = Fan OFF; 2= Compressor OFF; 3 = Compressor and fan OFF.
oAc Auxiliary relay configuration: 0 = Alarm; 1 = Dead Band; 2 = Auxiliary; 3 = Second compressor output; 4 = Light output; 5 = Second defrost output.
AoP Alar