I.6.8 ALARM SIGNALS
Contents
1. 0 gt Remove the obstr uctions lt m n Danger D o not start the unit Restore the unit The general conditions of the unit are compliant 1 8 3 2 Checking the compressor oil level START z Is the oil level sufficient YES Was pre heating activated atleast 24 gt hours before start up YES O Topup as necessary z O Activate pre heating and wait 24 hours The compressor is ready for startup 1 8 3 3 Checking the water connections START e Have the water connections been made to a professional standard gt N YES Bring the connections up to standard e Is the water input output direction correct N YES Are the circuits full of water and have the pipes been bled of any air residue YES Does the water flowconform to what is stated inthe user manual N YES Correct the input output directi on Fill the circuits and or bleed the air zZz e e Correct the water flow Do the pumps turn in the right direction NO Correctthe rotation direction YES Are the flow meters if installed acti ve and correctl y connected NO Repair or replace the component YES Are the water filters placed upstream from the heat exchanger and recover yunit in good working order and correctly ins talle d YES The water connections are compliant Repair or replace the component oO A e SECTI2. 005 alarm the pump may be faulty A3M AL 030 ST1 probe malfunction alarm B1 Indicates that either the probe is faulty or has detached from connector B1 Check A whether it s working and replace if nec essar y AL 033 ST4 probe malfunction alarm B4 Indicates that either the probe is faulty or has detached from connector B4 Check A whether it s worki ng and replace if nec essar y AL 034 ST2 probe malfunction alar m B5 Indicates that either the probe is faulty or has detached from connector B5 Check A whether it s worki ng and replace if nec essar y Indicates that either the pressure transducer is faulty or has detached from connector BENS Faultypressure transducer alarm B6 Check whether it s work ng and replace if necessar y a AL 037 ST8 probe malfunction alarm B8 Indicates that either the probe is faulty or has detached from connector B8 Check A whether it s working and replace if nec essar y This alarm does not indicate a malfunction but onlysignals that the number of worki ng AL 040 Maintenance pump 1 hours of the pump has exceeded the set value The unit continues to operate as A normal This alarm does notindicate a malfunction but onlysignals that the number of work ng AL 041 Maintenance compressor 1 hours of the compressor has exceeded the set value T he unit continues to operate as A normal This alarm does not indicate a malfunction but onlysignals that the number of work ng AL 042 Maintenance compressor
3. 2 hours of the compressor has exceeded the set value The unit continues to operate as A normal This alarm does notindicate a malfunction but onlysignals that the number of working AL 046 Maintenance pump 2 hours of the pump has exceeded the set value The unit continues to operate as A normal Indicates that the clock card accessor y is faulty cut off and resume the unit s power AL 055 Clockcardalarm If the alarm persists contact an authorised ser vice centre and the clockcard will be A replaced AL 056 Phase sequence alarm Indicates that the L1 L2 L3 phase sequence tothe mains switch is incorrect Cut the M unit off adj ust the sequence and resume power AL 057 Min max voltage alarm A AL 060 High temperature alarm IN r ec des Indicates that the recovery outlet water temperature has exceeded the safety A3M threshold A Automatic reset M Manualreset A3M Automatic 3 times then manual 50 11 8 1 CONFIGURATION Safet y component calibration settings Pressure switch Cut in Reset high pressure 40 2bar 28 1 bar Manual low pressure 2 bar 3 3 bar Automatic water differential 80 mbar 105 mbar Automatic Safety val ve 41 7 bar DANGER The safet y valve is calibrated to 41 7 bar It could cut in if the calibration valve is reached during the refrigerant charging operations causing a burst that could cause scalding Configuration parameters Standard setting Summer work ng temper ature set point TO Winte
4. e imbalance between the supply phases lt 2 o the electrical power suppl ysystem must be able to supply adequate current and be suitabl y sized to handle the load openthe electric panel and make sure the terminals of the power suppl y and of the contactors are tight they mayhave come loose during trans port which could lead to malfunctions Electrical connections must be made in compliance with the ocal installation standards in force in the place where the unit is installed and with the instructions in the wiring diagram provided with the unit 58 SECTION Il INSTALLATION AND MAINTEN ANCE SECTION I USER 11 8 3 START UP PROCEDURE IMPORTANT F Once the unit installation and connection operations have been The unit must be started up for the first time by completed it can be started up for the first time For acorrect first start up of the unit carefully followthe diagrams skilled technicians only qualified to work on conditioning and refrig erant units provided in the following paragraphs 11 8 3 1 General unit conditions START Have the technical clearance distances indicated in the manual been gt respected YES Are the finned coils fr ee from obstructions gt 4 YES Are the fan grilles free from obstructions 4 YES Is the unit damaged due to transport installation gt NO z oO gt Restore the indicated technical spaces z 0 a Clean the finned coils z
5. N AND MAINTEN ANCE Cut in Check set point and res et Checkand adj ust if nec essar y Restore the correct water flow Bleed Open val ves See Troubleshooting section Check and clean if necess ar y Indicates that the low pressure switch has been activated the alarmis reset manually from the keyboard Note the alarm will be automatically res et 3 times inthe region of an hour and will then need to be reset manually When this alarmis triggered the AL 021 and AL 022 signals are acti vated simultaneously If the alarm persists refer to Troubles hooting section AL 012 High pressure switch alarm AL 020 Fan thermal protection activation alarm AL 21 Alarm pump 1 AL 22 Alarm pump 2 AL 030 Inlet water temperature sensor alarm ST1 AL 034 Temp erature sensor alarm evaporator outlet water ST2 AL 033 Temperature sensor alarm buffer tank outlet water ST4 AL 035 Pressure transducer alarm AL 037 Inlet water recoverytemp erature sensor alarm ST8 AL 041 Compressor 1 maintenance signal AL 042 Compressor 2 maintenance signal AL 055 Clock card alarm Short circuited fan Indicates that the high press ure switch has been activated reset the press ure switch manuall yby firmly pressing the button on the pressure switch itself Then reset the alarm manually from the keyboard If the alarm persists refer to Troubles hooting section Checkand replace the fan if necess ary Indicates that following the AL 005 alarm t
6. ON I USER 1 8 3 4 Checking the electrical connections START Does the unit power suppl y match the values gt No indicated on the plaque YES Restore the correct power supply Is the phas e sequence correct gt NO Restore the correct phase s equence YES Does the earth conform with current regulations NO Danger Restore the earth connection YES Are the power circuit electric conductors of the size gt NO Danger Replace the wires indicated in the manual immediately YES Is the circuit breaker positioned upstream from the gt NO Danger R eplace the component AN unit of the right size immediatel y YES The electric connection is compliant 1 8 3 5 First start up Standard Unit START Ask all unauthorised personnel to leave the area De activate the magnetother mal switches on the compress or power suppl y Simul ate an empty startin order to ensure that the power contactors have been inserted correctly Are the power contactors ins erted correctly YES NO Checkand replace the component if necessary De activate the magnetother mal s witches on the compress or power supply g a Q fo 5 2 a gt o 5 p fs 3 Z D S x 2 La o c pes lt a 9 gt Power the auxiliar y circuit All ON OFF operations must be carried out EXCLUSIVELY using the ON OFF key on the control panel Start up the machine using th
7. SECTION I USER 1 6 8 ALARM SIGNALS Ifthe alarmis atype A alarm it will be automatic ally res et Ifthe alarm IMPORTANT is atype M alarm you will need to press the ALARM key for 3 seconds Malfunctions and alarms displayed by the machine to reset it Ifthe alarm is atype A3M alar m it will be automaticall y reset should NEVER be ignored The problem should be 3 times and will then need to be manually res et checked and resolved as soon as possible If the No alarms detected alarm re occurs call technical assistance If the unit s electronic board detects any malfunctions the ALARM key will light up on the control panel and the alar m code in question will appear onthe display with reference to the following table A Alarm Alarm description Reset AL 002 Antifreeze lockout alarm a probe ST2 has detected alower temperature than the set antifreeze M point AL 005 Differential pressure switch alarm Hetil leah ele ea pressure switch between the systeminput and output A3M AL 010 _Low pressure alarm Indicates that the low pressure switch has been activated A3M AL 012 High pressure Alarm Indicates that the high press ure switch has been activated M AL 020 Fanthermal alarm Indicates that the ther mal protection inside the fan s electric motor has been acti vated M AL 021 Alarm pump 1 Indicates that following the AL 005 alarm the pump may be faulty A3M AL 022 Alarm pump 2 Indicates that following the AL
8. e control panel ON OFF key Choose the oper ating modes MODE key Checkthe correct rotation of the pumps and fans the flows and Checkand replace the component if NO the operation of the heat exchangers sensors necessary Start up procedure completed aD 0 SECTION Il INSTALLATION AND MAINTEN ANCE 1 8 3 6 First start up Unit with recovery START Ask all unauthorised personnel to leave the area De activate the magnetother mal switches on the compress or power suppl y Simul ate an empty startin order to ensure that the power contactors have been inserted correctl y Are the power contactors ins erted correctly gt Checkand replace the component if nec essar y Disconnect the power from the auxiliary s upply again De activate the magnetother mal switches on the compress or power suppl y Power the auxiliary circuit lt m n zZ e Start up the machine usi ng the control panel ON OFF key also All ON OFF operations must be carried out starting up the recover y circuit pumps and disabling the heat EXCLUSIVELY using the ON OFF key on the recover y units through the control panel or excluding the heat recover y differential pressure switch consent Checkthat the pumps rotate correctly check the flows andthe gt NO gt Checkand replace the component if necessar operation of the heat recovery sensors y Put the unit in the right mode summer or wi nter then activate the r
9. ecover y unit consent Start up procedure completed control panel 1 8 3 7 Checks to be made while the machine is running STAR Ask all unauthorised personnel to leave the area T YES Cut in test Is the water differenti al crootaruror raracotne copon use the water intercept valves to reduce gt pressure switch acti vated NO gt Checkand or replace the component the flow to the evaporator correctly YES reading correct this anomal y YES If you take the pressure on the high pressure side to approx 8 YES Stop the unit and checkthe cause of bar are there gas leaks of gt 3 the leak EN 378 2 grams year NO Does the unit display feature YES Checkthe cause of the alarm any alarms See table of alarms NO Start up procedure completed 61 11 8 4 TABLE OF ALARMS The dis play onthe control panel displays the alarms with reference to the following table Alarms are reset by pressing the ALARM key on the control panel once the cause has been identified and eliminated Typ e of alarm AL 002 Antifreeze alarm AL 005 Alarm for water differential pressure switch on condenser evaporator AL 010 Lowpressure alarm Possible cause Set point s et too low Insufficient water flow Insufficient water flow Presence of air in the water system Intercept val ves clos ed The circulating pump if present does not run Water circuit filter obstructed SECTION Il INSTALLATIO
10. ect Cut the unit off adj ust the sequence and resume power The alarms are reset automaticall y Indicates that the general power supply voltage in volt is outside the set range Check power line The alarms are reset automaticall y Indicates that the recover yinl et water temperature has exceeded the safety thres hold
11. he pump may be faulty The alarmis reset manuall y fromthe keyboard Note the alarm will be automatically res et 3 times inthe region of an hour and will then need to be reset manuall y Sens or faulty Replace the sensor Sens or detached from connector B1 Sens or faulty Sens or detached from connector B5 Faulty sensor Sens or detached from connector B4 Transducer faulty Transducer detached from connector B6 Sens or fault Sens or detached from connector B8 Insert terminal into connector B1 Replace the sensor Insert terminal into connector B5 Replace the sensor Insert terminal into connector B4 Replace the transducer Insert transducer into connector B6 Replace the sensor Insert terminal into connector B8 This alarm does notindicate a malfunction but only signals that the number of wor king hours of the compressor has exceeded the set value T he unit continues to operate as nor mal Contact an authorised ser vice centre for maintenance inter vention Press the ALARM key to deactivate the signal Indicates that the clock card accessor y is faulty cut off and resume the unit s power If the alarm persists contact an authorised ser vice centre and the clockcard wil be replaced The alarms are reset automaticall y AL 056 Phase sequence alarm AL 057 Min max voltage alarm AL 060 Inlet water high temperature alarm rec d es 62 Indicates that L1 L2 L3 phas e sequence all interruttore gener ale is incorr
12. r working temperature set point THAEY 45 C Wor king temperature differential 2 C Antifreeze temper ature set point 1 5 C Antifreeze temper ature differential 2C Water differential press ure switch time upon start up 120 Water differential pressure s witch exclusion time upon start u 15 Circulation pump switch off time delay 15i Minimum time between two consecutive compressor start ups 360 The units are tested in the factor y where they are also calibrated and the default par ameter settings are putin These guarantee that the appliances run correctly in rated working conditions The machine configuration is carried out in the factor y and should never be altered IMPORTANT If aunit is used for the production of chilled water check the adjustment of the thermostatic valve 11 8 2 UNIT START UP AND STARTUP AFTER PROLONGED SHUTDOWN DANGER Always use the switch to isolate the unit from the mains before carrying out any maintenance work even if it is for inspection purposes only Make sure that no one accidentally supplies power to the machine lock the mains switch in the OFF position Befor e starting the unit perform the following checks o The electricity power supply must comply with the specifications on the data plate and or the wiring diagram and it must fall within the followi ng limits e Variation of the power supply frequency 2 Hz e variation of the power supply voltage 10 of the nominal voltage
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