HTWL SERVICE MANUAL
Contents
1. ASING then it will return to the normal operating mode PARAM RESTORE s9 Once confirmed the controller will reset to the default parameters see the chapter PARAMETERS if the parameters have been input by the keyboard or using an electronic key The controller will restart with the new settings PASSWORD s10 Press the OK button and the password to enter the service menu will be shown Using the left hand buttons the value can be modified between 00 password excluded and 255 To confirm the new password press OK key matele s11 Press the OK button and the current language will be displayed Using the left hand buttons you may choose the language from the 5 available possibilities DnE itg s12 Press the OK button and the value read by the probe S1 will be shown Using the left hand buttons you can read the temperature and humidity values for the installed probes The last strings refers to the activated status of the output relay O at rest 1 activated Alfa Elettronica Service manual for HTWL temperature and humidity controllers PARAMETER TABLE P01 P02 P03 P04 P05 P06 P07 P08 P09 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P26 P28 P29 P30 P31 P32 P33 P34 P35 P36 P37 P38 P39 P40 P41 P42 P43 P44 P45 P46 P47 P48 P49 P50 P51 P52 P53 P54 P55 P56 P57 P58 P59 P60 P61 P62 P63 P64 P65 P66 P67 P68 P69 P70 P71 P72 P73 P74 P75 P76 AD2. Fan setpoint during evaporation 05 Fan setpoint during defrost 00 Warm Air Lock hysterisis 0 5 Minimum evaporation S2 25 Set condenser fan 50 S3 disabled 50 Maximum condensation S3 58 Nr of Infotest thermostatical cycles 02 Nr of Infotest stabilization cycles 02 Maximum Infotest temperature 10 Save options 01 Saving interval 05 Print mode 00 1 daily defrost time 24 2 daily defrost time 24 3 daily defrost time 24 4 daily defrost time 24 Alternative differential setpoint 02 Alternative setpoint start time 24 Duration with alternative setpoint 00 Nr of Energy Saving hours 02 Compressor cut in energy Saving 50 Door frame setpoint 05 Humidity probe calibration 00 Dehumidification hysterisis 00 Humidification hysterisis 00 Indip Rh control 0 in dead band 1 00 Max nr of pressure switch interventions 03 Pressure switch time count 30 Ventilation duration Off amp Clean 00 Lower setpoint limit 2 zone 30 Upper setpoint limit 2 zone 30 Hysterisis 2 zone 00 Compressor delay 2 starting up 30 Defrost interval 2 zone 12 Maximum defrost time 2 zone 40 Relay event U1 00 Relay event U2 00 Relay event U3 00 Relay event U4 00 Relay event U5 00 Relay event U6 00 NOTE For the printer options consult the manual RDPS SUPERPARAMETERS Final value sum of weights VOP with weight P with weight 0 Show in F Show in C Backlight always lit Backlight switch off after 4 P 1 e Buzzer enabled Buzzer d
3. HTWL SERVICE MANUAL The HTWL temperature and humidity controllers are made up of a Keyboard and a Remote module The connection between the keyboard and the remote module should be made using a two conductor cable making sure that you respect the polarity L max 10 m crossection 5 1mm2 Installing the probe Install the regulation probe 1 in a zone that is not subject to air flows For units with electric defrosting or with cycle inversion fasten the probe S2 to the beginning of the circuit in contact with the evaporator unit pipes by bending the aluminium fins around the probe bulb itself For hot gas units fasten the probe to the circuit outlet If you are using the condenser probe S3 consult the fridge manufacturer for information regarding its positioning The probe 4 is used as a PFC digital input potential free contact Install the humidity probe L1 making sure that the correct type is fitted 4 20 mA gt ISP load 0 3 18 mA gt ISP load 128 Installing loads Connect the 230 Vac power supply to the fastons N eutral and L ive respecting the positions Relay U1 is a potential free contact and must never be connected to the neutral or live contacts The fastons marked N are in parallel and connected to the neutral fastons Relay U2 has an exchange contact run the live wire to U2A at rest and to U2B when the contact is activated The fastons U3 U4 U5 U6 carry the live load when their relays are activated Relay configuration As
4. R ALL ALH PTD ALD ADD VOP MES ISP OSP DIN DOO CAL HYS HYC SLL SLH ADL ADS CCD CON COF DRP DCM CPH ADC DOP ITD DTO DTE DEO SDT DCD FOP FAD FAS FSD HYW LET FCE MCT CYC STA ETT LOG SPT PRT AD1 AD2 AD4 AD4 HES ESS ESD AES CPE SPX HPO HRH HRL URM PMT TBP OCT SL2 SH2 HY2 AS2 IT2 DT2 PU1 PU2 PU3 PU4 PUS PU6 Serial address 01 Lower alarm limit relative to setpoint 05 Upper alarm limit relative to setpoint 10 Clogged condenser threshold 00 Alarm delay 60 Alarm delay on start up 90 Display options see super parameters 62 Program label disabled 0 running gt O 00 Input options see super parameters 00 Output options see super parameters 00 Door micro switch options 00 Door opening time limit 04 Probe S1 calibration 00 Differential action cold 00 Differential action hot 00 Lower setpoint limit 30 Upper setpoint limit 30 Compressor anti surge up down 01 Compressor start delay 15 Compressor cut in cut out delay 08 Time ON for probe failure 05 Time OFF for probe failure 03 Drip time 60 O electric 1 inversion gt 1 hot gas 00 Max compressor in 24 hours 99 Auxiliary compressor delay 00 Defrost options see super parameters 00 Interval between defrost cycles 08 Maximum defrost duration 30 Defrost end 50 S2 disabled 50 Extra defrost time 00 Evaporator icing sensitivity 1 0 Condensate discharge time 05 Fan operations see super parameters 00 Evaporator fan delay 60
5. age compressor off time Min Evap 35 5 C Minimum evaporation Max Evap 24 5 C Maximum evaporation dT Cond 08 5 C Average condenser thermal S n 00 00 00 Controller serial number PaO s2 Example DEF01 M01 d 30 DEFO1 nr of defrosts stored M01 defrost code d 30 duration in minutes If the RTCL module is installed the date time is shown by pressing the OK button Defrost codes M1 manual M2 serial M3 time interval M4 compressor time M5 hourly M6 infotest M7 calibration M8 minimum evaporation M9 maximum evaporation M10 M11 M12 protection M20 Off amp Clean Jantin s3 Example F09 PROBE S1 F09 number of stored failures PROBE S1 type of failure If the RTCL module is installed the date time is shown by pressing OK Bojo elicit s4 The controller displays the total number of times the door has been opened since the last memory reset expressed in hours days In models with an RTCL module installed when you press OK the total number of times the doors has been opened over the last 32 days will be shown Example n 02 12 d 145 n 02 12 nr of openings gt DOO min nr Total openings d 145 overall time in which the door has been open For the Defrost list Failure list and Opening list the controller indicates up to 255 events while the last 32 are accompanied by the relative data AAU sassy SO The controller has 74 setting parameters see parameter table Confirm by pressing OK The displa
6. isabled 64 DOP with weight P with weight 0 Manual defrost No manual defrost 4 4 P FOP with weight P with weight 0 1 VE enabled VE disabled 8 VE with control Rh VE without control Rn defrost defrost Warm air lock disabled P ISP with weight P with weight 0 1 Door switch n o Door switch n c 8 Digital Energy Saving on Digital Eneray Saving off _ Humidity sensor 3 18 mA Humidity sensor 4 20 mA P OSP with weight P with weight 0 1 Light key enabled Light key disabled 4 e Deep Freeze enabled Deep Freeze disabled Load menu active in OFF Load menu active in ON Loads also active in OFF Loads also active in ON Loads switched off by OFF Loads unchanged by OFF VARA s13 Insert the program key connection in the connector on the remote card with the controller not receiving mains power When the key is inserted at start up the controller automatically enters program menu s13 The display shows LOADING k1 press the OK button again the display will show LOADING FROM gt 00 Using the left hand keys choose one of the 32 memory positions from 00 to 31 in which to send the parameters into the controller Press OK after the message EXIT CONFERM choose the option and wait for the data to be loaded into the controller VE Evaporator fan VC Condenser fan Alfa Elettronica Service manual for HTWL temperature and humidity controllers
7. sociating the action number with the parameters PU1 to PU6 relative to each relay this will then be set to the chosen action as follows Actions 01 Cooling 02 Defrost 03 Evaporator fan O04 Condenser fan O5 Light O6 Auxiliary load 07 Remote alarm O8 Dehumidification O9 Humidification 10 Anti freeze 11 Condensate discharge 12 Heating 13 Compressor delay 14 Cooling 2nd zone 15 Defrost 2nd zone 16 Printer relay 17 Active loads MENU SERVICE from s1 to s13 Press the menu key use the left hand keys to select menu m7 press OK to confirm if the Password value is not zero you will be asked to input a password Use the left hand keys to select the correct value and press OK to confirm If the input value is wrong WRONG PASSWORD will appear on the display and the controller will return to the main window If the password is not known press the menu key when starting up until you enter the Service Menu Select the sub menus using the left hand keys and press OK to confirm select the individual fields using the left hand keys SIreWEeS ie s1 Example KEYPAD ON 00032 Nr Of keypad start ups POWER ON 00089 KNr Of mains power start ups RESET 00035d 07h dd hh reset function HTWL 00054d 08h dd hh refrigerator function COMP 00039d 14h dd hh compressor function COMP 1h 45 compressor during the last hour COMP 24h 36 compressor during the last 24hrs COMP ON 04 35 Average compressor on time COMP OFF 0801 Aver
8. y shows the first parameter the value and the unit of measurement and flashes the progressive number The parameters are selected using the left hand button Press OK to modify the value The display will flash the value of the parameter to be modified using the left hand buttons The value can be stored by pressing OK key After the last parameter the parameter administrator editing options appear these are functions for the fridge manufacturer WS s The InfoTest function started up from sub menu s runs a fridge function test in 5 stages as well a san initial stabilizing test Ph1 cycles Ph2 defrost Ph3 recovery Ph4 pull up Ph5 pull down The parameters linked to the Infotest function are as follows STA nr of stabilizing cycles CYC nr of thermost cycles ETT upward cycle end temperature downward cycle start DRSI UN s7 Once the test has finished menu s7 contains the following report PH1ON 01 50 Compressor ON time min sec PH 1 OFF 02 23 Compressor OFF time min sec PH 2 DEF 03745 Defrost duration minutes PH 3 REC 02 55 Recovery duration minute PH 4 UP 00105s C Temperature loss sec C PH 5 DW 00055s C Temperature recovery sec C If the RDPS printer is present the report data can be printed from MENU SERVICE INFOTEST DATA PRINT INFODATA MEMORY RESET s8 Confirm by pressing OK the controller will cancel all memory content with the exception of the controller and show the message MEMORY ER
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