dIXEL Installing and Operating Instructions
Contents
1. oF2 First Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the first evaporator probe oF3 Second Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the second evaporator probe oF4 Third Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the third evaporator probe oF5 Fourth Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the fourth evaporator probe P2P First Evaporator probe presence n not present the defrost of the first evaporator stops only by time y present the defrost of the first evaporator stops by temperature and time P3P Second Evaporator probe presence n not present the defrost of the second evaporator stops only by time y present the defrost of the second evaporator stops by temperature and time P4P Third Evaporator probe presence n not present the defrost of the third evaporator stops only by time y present the defrost of the third evaporator stops by temperature and time P5P Fourth Evaporator probe presence n not present the defrost of the fourth evaporator stops only by time y present the defrost of the fourth evaporator stops by temperature and time XM244L 2 5 1592013300 dixell HES Temperature increase during the Energy Saving cycle 30 0 C 30 0 C 22 86 F sets the increasing value of the set point2. Installing and Operating Instructions WING XM244L 1 GENERAL WARNING 1 1 A PLEASE READ BEFORE USING THIS MANUAL e This manual is part of the product and should be kept near the instrument for easy and quick reference e The instrument shall not be used for purposes different from those described hereunder It cannot be used as a Safety device e Check the application limits before proceeding 1 2 A SAFETY PRECAUTIONS e Check the supply voltage is correct before connecting the instrument e Do not expose to water or moisture use the controller only within the operating limits avoiding sudden temperature changes with high atmospheric humidity to prevent formation of condensation e Warning disconnect all electrical connections before any kind of maintenance e Fit the probe where it is not accessible by the End User The instrument must not be opened e n case of failure or faulty operation send the instrument back to the distributor or to Dixell S p A see address with a detailed description of the fault e Consider the maximum current which can be applied to each relay see Technical Data e Ensure that the wires for probes loads and the power supply are separated and far enough from each other without crossing or intertwining In case of applications in industrial environments the use of mains filters our mod FT1 in parallel with inductive loads could be useful 2 GENERAL DESCRIPTION Model XM244L 38x
3. AND MIN TEMPERATURE RECORDED To reset the stored temperature when max or min temperature is displayed 1 Press SET key until ST label starts blinking iN 2 3 N B After the installation RESET the temperature stored 4 5 HOWTO SEE AND MODIFY THE SET POINT 1 Push and immediately release the SET key the display will show the Set point value The SET LED start blinking To change the Set value push the or arrows within 10s A 4 To memorise the new set point value push the SET key again or wait 10s 4 6 TO START A MANUAL DEFROST any 1 Push the DEF key for more than 2 seconds and a manual defrost will start La 4 7 TO ENTER IN PARAMETERS LIST PR1 To enter the parameter list Pr1 user accessible parameters operate as follows hs 2 The instrument will show the first parameter present in Pr1 4 8 TO ENTER IN PARAMETERS LIST PR2 To access parameters in Pr2 1 Enter the Pr1 level Select Pr2 parameter and press the SET key The PAS flashing message is displayed shortly followed by 0 with a flashing zero Use a or to input the security code in the flashing digit confirm the figure by pressing SET The security code is 321 5 If the security code is correct the access to Pr2 is enabled by pressing SET on the last digit 1 Enter the Programming mode by pressing the Set and DOWN key for f
4. all the relays are switched OFF and the regulations are stopped N B During the OFF status the Light button is active 4 12 TO SEE THE PROBE VALUES 1 Enter in Pr2 level 2 Select Prd parameter with or v 3 Press the SET key to display Pb1 label alternate with Pb1 value 4 Usea and keys to display the other probe values 5 Press SET to move to the following parameter 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 SET 58 F SET Sets the minimum acceptable value for the set point US Maximum set point limit SET 110 C SET 230 F Set the maximum acceptable value for set point 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 Light can work AC Anti short cycle delay 0 30 min interval between the compressor stop and the following restart CCt Thermostat override Omin 23h 50min allows to set the length of the continuous cycle Can be used for instance when the room is filled with new products Con Compressor ON time with faulty probe 0 255 min time during which the compressor is active i
5. for third evaporator 50 0 110 0 C 58 230 F Enabled only when P4P yes sets the temperature measured by the probe 4 which causes the end of defrost on the third evaporator dt4 Defrost termination temperature for fourth evaporator 50 0 110 0 C 58 230 F Enabled only when P5P yes sets the temperature measured by the probe 5 which causes the end of defrost on the fourth evaporator Md1 Maximum duration of defrost for 1st evaporator 0 255 min When P2P n no evaporator probe it sets the defrost duration for first evaporator when P2P y defrost end is based on temperature it sets the maximum length of defrost for first evaporator 1592013300 XM244L GB r2 0 04 07 06 doc Installing and Operating Instructions Md2 Maximum duration of defrost for 2 evaporator 0 255 min When P3P n no evaporator probe it sets the defrost duration for second evaporator when P3P y defrost end is based on temperature it sets the maximum length of defrost for second evaporator Md3 Maximum duration of defrost for 3 evaporator 0 255 min When P4P n no evaporator probe it sets the defrost duration for third evaporator when P4P y defrost end is based on temperature it sets the maximum length of defrost for third evaporator Md4 Maximum duration of defrost for 4 evaporator 0 255 min When P5P n no evaporator probe it sets the defrost duration for first evaporator when P5P y defrost end is based on
6. of the eight programmable defrost cycles on holidays Ex When Sd2 3 4 the second defrost starts at 3 40 on holidays N B To disable a defrost cycle set it to nu not used Ex If Ld6 nu the sixth defrost cycle is disabled OTHER Adr RS485 serial address 1 247 Identifies the instrument address when connected to a ModBUS compatible monitoring system dP1 Thermostat Probe display read only display the temperature values of the thermostat probe Pb1 dP2 First evaporator probe display read only display the temperature values of the first evaporator probe Pb2 dP3 Second evaporator probe display read only display the temperature values of the second evaporator probe Pb3 dP4 Third evaporator probe display read only display the temperature values of the third evaporator probe Pb4 dP5 Fourth evaporator probe display read only display the temperature values of the fourth evaporator probe Pbd rEL Release software read only Software version of the microprocessor Ptb Parameter table read only it shows the original code of the dixe ll parameter map Pr2 Access to the protected parameter list read only 6 INSTALLATION AND MOUNTING Instruments XM244L shall be mounted on vertical panel in a 150x31 mm hole and fixed using two screws 3 x 2mm To obtain an IP65 protection grade use the front panel rubber gasket mod RG L The temperature range allowed for correct operation is 0 60 C Avoid places
7. subject to strong vibrations corrosive gases excessive dirt or humidity The same recommendations apply to probes Let the air circulate by the cooling holes 6 1 CUT OUT 165 150 5 40 5 0 3 x2 6 2 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD 1592013300 XM244L GB r2 0 04 07 06 doc Installing and Operating Instructions 2 CLICK op 6 3 MOUNTING WITH KEYBOARD COVER OPENING UPWARD J A ay 7 ELECTRICAL CONNECTIONS The instruments are provided with screw terminal block to connect cables with a cross section up to 2 5 mm for the digital and analogue inputs Relays and power supply have a Faston connection 6 3mm Heat resistant cables have to be used 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 the power connections Do not exceed the maximum current allowed on each relay in case of heavier loads use a suitable external relay N B Maximum current allowed for all the loads is 20A 7 4 PROBE CONNECTIONS The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature Place the defrost termination probe among the evaporator fins in the coldest place where most ic
8. 185 mm format is microprocessor based controller suitable for applications on medium or low temperature refrigerating units It is provided with six relay outputs to control compressor four defrost which can be either electrical or hot gas and the evaporator fans It is also provided with 5 NTC probe inputs one for temperature control the other four to control the defrost end temperature of the evaporators An output allows the user to programme the parameter list with the Hot Key 3 CONTROLLING LOADS 3 1 THE COMPRESSOR The regulation is performed according to the temperature measured by the thermostat probe with a positive differential from the set point if the temperature increases and reaches set point plus differential the compressor is started and then turned off when the temperature reaches the set point value again In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters COn and COP 3 2 FAST FREEZING 9 When defrost is not in progress it can be activated the keypad by holding the key pressed for about 3 seconds The compressor operates in continuous mode for the time set through the CCt parameter The cycle can be terminated before the end of the set time using the same activation key for about 3 seconds 3 3 DEFROST Two defrost modes are available through the tdF parameter defrost with electrical heater or hot gas The defrost i
9. EE ALARM The dixXell instruments are provided with an internal check for the data integrity Alarm EE flashes when a failure in the memory data occurs In such cases the alarm output is enabled 9 3 ALARM RECOVERY Probe alarms P1 probe1 faulty P2 P3 P3 P4 P5 they automatically stop 10s after the probe restarts normal operation Check connections before replacing the probe Temperature alarms HA and LA automatically stop as soon as the thermostat temperature returns to normal values or when the defrost starts 10 TECHNICAL DATA Housing self extinguishing ABS Case facia 38x185 mm depth 76mm Mounting panel mounting in a 150x31 mm panel cut out with two screws 3 x 2mm Distance between the holes 165mm Protection IP20 Frontal protection IP65 with frontal gasket mod RG L optional Connections Screw terminal block lt 2 5 mm heat resistant wiring and 6 3mm Faston Power supply 230Vac or 110Vac 10 Power absorption 7VA max Display 3 digits red LED 14 2 mm high Inputs 2 NTC or PTC probes Digital input 1 free voltage Relay outputs Total current on loads MAX 20A compressor relay SPST 8 3 A 250Vac defrost 1 2 3 4 relay SPST 8 3 A 250Vac fans relay SPDT 8 3 A 250Vac Other output alarm buzzer optional Data storing on the non volatile memory EEPROM Kind of action 1B Pollution grade normal Software class A Operating temperature 0 60 C Stor
10. age temperature 25 60 C Relative humidity 20 85 no condensing Measuring and regulation range NTC probe 40 110 C 58 230 F Resolution 0 1 C or 1 C or 1 F selectable Accuracy ambient temp 25 C 0 5 C 1 digit 11 CONNECTIONS 823A 83IA 8AA 83A amp 3 A amp 3 A 250V 5V 250V 250V 250V 250V ws ah hs hs oN G Supply Def 1 Def2 Def3 Def4 Fan Comp 230V 12 DEFAULT SETTING VALUES Label Name Range _ Default Level REGULATION o Soo S S o o O Set Set point y Minimum set point 50 0 C SET 58 F SET SET 110 C 20 Pr2 SET 230 F n Compressor ON time with faulty probe 0 255 min COF Compressor OFF time with faulty probe 0 255 min r DISPLAY o o o emperature measurement unit C F r ES Resolution integer decimal point temperature 50 0 110 C 58 230 F temperature 50 0 110 C 58 230 F as tdF Defrosttype En EGF IGF dt Defrost termination 1 Evaporator Defrost termination 2 Evaporator 1592013300 XM244L GB r2 0 04 07 06 doc 1592013300 08 230 F 98 230 F Defrost termination 3 Evaporator Defrost termination 4 Evaporator Md2 Maximum length for 2 defrost 0255 min 30 Pr2 Md4 Maximum length for 4 defrost 0255 min 30 Pr2 dea Displaying during defrost rt it SEt dEF dEG dSd Start defrost delay 59min P Fdt_ Drainingtime 60min 0
11. during the Energy Saving cycle TO SET CURRENT TIME AND WEEKLY HOLIDAYS Hur Current hour 0 23 h Min Current minute 0 59min dAY Current day Sun SAt Hd1 First weekly holiday Sun nu Set the first day of the week which follows the holiday times Hd2 Second weekly holiday Sun nu Set the second day of the week which follows the holiday times Hd3 Third weekly holiday Sun nu Set the third day of the week which follows the holiday times N B Hd1 Hd2 Hd3 can be set also as nu value Not Used TO SET ENERGY SAVING TIMES ILE Energy Saving cycle start during workdays 0 23h 50 min During the Energy Saving cycle the set point is increased by the value in HES so that the operation set point is SET HES dLE Energy Saving cycle length during workdays 0 24h 00 min Sets the duration of the Energy Saving cycle on workdays ISE Energy Saving cycle start on holidays 0 23h 50 min dSE Energy Saving cycle length on holidays 0 24h 00 min HES Temperature increase during the Energy Saving cycle 30 30 C 54 54 F sets the increasing value of the set point during the Energy Saving cycle TO SET DEFROST TIMES Ld1 Ld8 Workday defrost start 0 23h 50 min These parameters set the beginning of the eight programmable defrost cycles during workdays Ex When Ld2 12 4 the second defrost starts at 12 40 during workdays d1 Sd8 Holiday defrost start 0 23h 50 min These parameters set the beginning
12. e UPLOAD the uPL message is blinking 4 Turn OFF the instrument remove the Hot Key plug in the TTL serial cable then turn it ON again At the end of the data transfer phase the instrument displays the following messages end for right programming err for failed programming In this case push SET key if you want to restart the programming again or remove the not programmed Hot key 9 ALARM SIGNALS Message aE Outputs Cd Thermostat probe failure Alarm output ON Compressor output according to parameters COn and COF XM244L 3 5 Installing and Operating Instructions First Evaporator probe failure larm output ON Other outputs unchanged Second Evaporator probe failure larm output ON Other outputs unchanged 7 larm output ON Other outputs unchanged Fourth Evaporator probe failure Alarm output ON Other outputs unchanged larm output ON Other outputs unchanged larm output ON Other outputs unchanged Data or memory failure larm output ON Other outputs unchanged The alarm message is displayed until the alarm condition is recovery All the alarm messages are showed alternating with the room temperature except for the P1 which is flashing To reset the EE alarm and restart the normal functioning press any key the rSt message is displayed for about 3s 9 1 SILENCING BUZZER Once the alarm signal is detected the buzzer can be silenced by pressing any key 9 2
13. e is formed far from heaters or from the warmest place during defrost to prevent premature defrost termination 8 USE OF THE PROGRAMMING HOT KEY The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the Hot Key and vice versa 8 1 DOWNLOAD FROM THE HOT KEY TO THE INSTRUMENT 1 Turn OFF the instrument by means of the ON OFF key remove the TTL serial cable if present insert the Hot Key and then turn the Wing ON 2 Automatically the parameter list of the Hot Key is downloaded into the Wing memory the DoL message is blinking After 10 seconds the instrument will restart working with the new parameters 3 Turn OFF the instrument remove the Hot Key plug in the TTL serial cable then turn it ON again At the end of the data transfer phase the instrument displays the following messages end for right programming The instrument starts regularly with the new programming err for failed programming In this case turn the unit off and then on if you want to restart the download again or remove the Hot key to abort the operation 8 2 UPLOAD FROM THE INSTRUMENT TO THE HOT KEY 1 Turn OFF the instrument by means of the ON OFF key and remove the TTL serial cable if present then turn it ON again 2 When the Wing unit is ON insert the Hot key and push key the uPL message appears 3 Push SET key to start th
14. ew seconds fe and Sa start blinking AN Another possibility is the following after switching ON the instrument the user can push Set and DOWN keys within 30 seconds NOTE each parameter in Pr2 can be removed or put into Pr1 user level by pressing SET When a parameter is present in Pr1 LED Q is on 4 9 HOWTO CHANGE THE PARAMETER VALUE 1 Enter the Programming mode 2 Select the required parameter with or v 3 Press the SET key to display its value G and h LED starts blinking XM244L 1 5 dixell 1592013300 4 Use a or v 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 4 10 HOW TO LOCK THE KEYBOARD 1 Keep the a and keys pressed together for more than 3 s the and keys 2 The POF message will be displayed and the keyboard is locked At this point it is M 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 a Keep the and keys pressed together for more than 3s 9 4 11 ON OFF FUNCTION By pushing the ON OFF key the instrument shows OFF for 5 sec and the ON OFF LED is switched ON A During the OFF status
15. f Prz MPO First defrost after startup n y no Pre GAF Defrost delay after fast freezing 0 23h50min 0 Pr2 FANS o e e o Fnd Fans delay after defrost 0 255 min Fans stop temperature 50 0 110 C 2 0 Pr2 58 230 F Fan probe selection nP P1 P2 P3 F ALARMS Pee Temperature alarms configuration MAXIMUM temperature alarm 50 0 110 C 58 230 50 0 110 C 98 230 F 0 1 25 5 C 1 45 F ALL minimum temperature alarm 40 Pr Temperature alarm and fan differential ALd_ Temperature alarm delay ANALOGUE INPUTS ee First Evaporator probe calibration 12 0 12 0 C 0 Pr2 ii 21 21 F 21 21 F 21 21 F Fourth Evaporator probe calibration 12 0 12 0 C 21 21 F P2P First Evaporator probe presence ny Second Evaporator probe presence P4P Third Evaporator probe presence n y P5P_ Fourth Evaporator probe presence n y C Temperature increase during the Energy a a Saving cycle 22 86 F TIME AND WEEKLY HOLIDAYS Z o O Hur Currenthour 03 0o P Min Currentminute CEC 0 59 O0 f Pr Hd1 First weekly holiday Sun SAt nu nu f Pr2 Hd2 Second weekly holiday Sun SAt nu nu Pra Hd3 Third weekly holiday Sun SAt nu nu f Pr2 ENERGY SAVINGTIMES J CT ILE Energy Saving cycle start during workdays 0 23h 50 min 0 f Pr2 dLE Energy Saving cycle length during 6254 OO min Pro workdays ISE Energy Saving cycle start
16. n 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 DISPLAY CF Temperature measurement unit C Celsius F Fahrenheit When the measurement unit is changed the SET point and the values of some 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 Lod Local display select which probe is displayed by the instrument P1 Thermostat probe P2 Evaporator probe P3 not used DEFROST tdF Defrost type rE electrical heater Compressor OFF in hot gas Compressor and defrost relays ON EdF Defrost mode in interval mode The defrost starts when the time Idf is expired IdF Interval between defrosts 1 120h Determines the time interval between the beginning of two defrost cycles dt1 Defrost termination temperature for first evaporator 50 0 110 0 C 58 230 F Enabled only when P2P yes sets the temperature measured by the probe 2 which causes the end of defrost on the first evaporator dt2 Defrost termination temperature for second evaporator 50 0 110 0 C 58 230 F Enabled only when P3P yes sets the temperature measured by the probe 3 which causes the end of defrost on the second evaporator dt3 Defrost termination temperature
17. nterval is control by means of parameter EdF EdF in the defrost is made every IdF time EdF Sd the interval IdF is calculate through Smart Defrost algorithm only when the compressor is ON The controller synchronises the defrost starts and termination It waits all the evaporators have reached the end defrost temperature before restarting regulation 3 4 CONTROL OF EVAPORATOR FANS The fan control mode is selected by means of the FnC parameter FnC C n_ fans will switch ON and OFF with the compressor and not run during defrost FnC O n fans will run continuously but not during defrost After defrost there is a timed fan delay allowing for drip time set by means of the Fnd parameter FnC C y fans will switch ON and OFF with the compressor and run during defrost FnC 0 y fans will run continuously also during defrost An additional parameter FSt provides the setting of temperature detected by the evaporator probe above which the fans are always OFF This can be used to make sure circulation of air only if his temperature is lower than set in FSt 4 KEYBOARD To display and modify target set point in programming mode it selects a parameter or confirm an operation By holding it pressed for 3s when max or min temperature is displayed it will be erased To see the max stored temperature in programming mode it browses the parameter codes or increases the displayed value B
18. on holidays O 23h50min 0 Pr2 dSE Energy Saving cycle length on holidays 0 24h00min 0 Pr2 es fees remem Sk To ee Saving cycle 04 54 F DEFROSTTIMES Ld4 _ f1 workdays defrost stat 0 23h 50min nu 60 nu nu nu nu nu u nu Sd4 1 holiday defrost start 0 23h 50 min nu Sd2 2 holiday defrost start 0 23H 50 min nu 13 0 4 i nu Sd4 _ 4 holiday defrost start 0 23h 50 min nu ou ou Ld7 _ 7 workdays defrost start 23h50min nuj nu hw ou 6 0 XM244L 415 Installing and Operating Instructions 1592013300 Sd5 _ 5 holiday defrost start 0 23h 50min nu nu f Pr2 Sd6 6 holiday defrost start 0 23h 50 min nu 7 holiday defrost start 0 23h 50 min nu Sd8 8 holiday defrost start 0 23h 50 min nu OTHER First evaporator Probes display Second evaporator Probes display Third evaporator Probes display Software release Pth Map code o Pr2 Access parameter list CIXell s p a Z I Via dell Industria 27 32010 Pieve d Alpago BL ITALY tel 39 0437 98 33 fax 39 0437 98 93 13 http www dixell com E mail dixell dixell com 1592013300 XM244L GB r2 0 04 07 06 doc XM244L 5 5
19. robe selection for fan nP not probe parameter FST is not considered P1 probe 1 P2 probe 2 P3 probe 3 P4 probe 4 P5 probe 5 ALARMS ALC Temperature alarm configuration rE High and Low alarms related to Set Point Ab High and low alarms related to the absolute temperature ALU High temperature alarm setting ALC rE 0 50 C or 90 F ALC Ab ALL 110 C or 230 F when this temperature is reached and after the ALd delay time the HA alarm is enabled ALL Low temperature alarm setting ALC rE 0 50 C or 90 F ALC Ab 50 C or 58 F ALU when this temperature is reached and after the ALd delay time the LA alarm is enabled AFH Temperature alarm and fan differential 0 1 25 5 C 1 45 F Intervention differential for temperature alarm set point and fan regulation set point always positive ALd Temperature alarm delay 0 255 min time interval between the detection of an alarm condition and the corresponding alarm signalling dAO Delay of temperature alarm at start up Omin 23h 50min time interval between the detection of the temperature alarm condition after the instrument power on and the alarm signalling EdA Alarm delay at the end of defrost 0 255 min Time interval between the detection of the temperature alarm condition at the end of defrost and the alarm signalling PROBE INPUTS oF1 Thermostat probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offset of the thermostat probe
20. temperature it sets the maximum length of defrost for fourth evaporator 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 dSd Start defrost delay 0 59min This is useful when different defrost start times are necessary to avoid overloading the plant Fdt Drain down time 0 60 min time interval between reaching defrost termination temperature and the restoring of the control s normal operation This time allows the evaporator to eliminate water drops that might have formed due to defrost dPO First defrost after start up y Immediately n after the IdF time dAF Defrost delay after fast freezing OQmin 23h 50min after a Fast Freezing cycle the first defrost will be delayed for this time FANS FnC Fan operating mode C n running with the compressor OFF during the defrost C y running with the compressor ON during the defrost O n continuous mode OFF during the defrost O y continuous mode ON during the defrost Fnd Fan delay after defrost 0 255 min The time interval between the defrost end and evaporator fans start FSt Fan stop temperature 50 110 C 58 230 F setting of temperature detected by evaporator probe above which the fan is always OFF FAP P
21. y holding it pressed for 3s the fast freezing cycle is started D 1592013300 XM244L GB r2 0 04 07 06 doc 1592013300 To see the min stored temperature in programming mode it browses the parameter codes or decreases the displayed value KEY COMBINATIONS By holding it pressed for 3s the defrost is started Switch ON and OFF the instrument QD Q To lock and unlock the keyboard Q Q To enter the programming mode QD To exit the programming mode 4 1 USE OF LEDS Each LED function is described in the following table LED MODE Function S co ON The compressor is running FLASHING Programming Phase flashing with LED eh Anti short cycle delay enabled FLASHING Programming Phase flashing with LED i The defrost is enabled o FLASHING Drip time in progress 6 The Fast Freezing cycle is enabled ON ALARM signal In Pr2 indicates that the parameter is also present in Pr1 4 2 HOWTO SEE THE MIN TEMPERATURE 1 Press and release the key 2 Oo The Lo message will be displayed followed by the minimum temperature recorded 4 3 HOWTO SEE THE MAX TEMPERATURE By pressing the key or waiting for 5s the normal display will be restored 1 Press and release the a key The Hi message will be displayed followed by the maximum temperature recorded By pressing the key or waiting for 5s the normal display will be restored 4 4 HOWTO RESET THE MAX
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