Viessmann Vitoclima 300-S Service Instructions Manual Download Page 24 | Manualshive

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Fault

Possible cause

Remedy

In cooling mode, limited
air delivery and internal
device whistles

Ice forms at the heat ex-
changer of the internal
device due to a refrig-
eration leak

Fix leak; fill system with
refrigerant

No air delivery at the ex-
ternal unit

No voltage at the exter-
nal fan connection

Check the power supply
and connecting cable be-
tween the internal device
and the external unit
Replace PCB (external
unit)

External fan capacitor
faulty

Replace capacitor

External fan motor faulty Replace motor

In heating mode, the heat
exchanger of the external
unit is icing up

Temperature sensor of
the heat exchanger of
the external unit faulty or
incorrect connection

Check connection;
and replace the tempera-
ture sensor, if required

Controller of the external
unit faulty

Replace controller

Ice forms at the bottom of
the external unit

Condensate drain frozen
up

Connect the on-site de-
frost heater

Compressor (in the exter-
nal unit) does not run

No voltage at the term-
inals of the external unit

Check the connecting
cable between the inter-
nal device and the exter-
nal unit
Replace PCB (internal
device)

Voltage too low at the
terminals of the external
unit

Check power supply

Compressor capacitor
faulty

Replace capacitor

Compressor motor faulty Replace motor
Compressor shutdown
due to overload (low vol-
tage or high tempera-
ture)

Check voltage;
switch OFF system for
one hour

Diagnosis

(cont.)

24

Troubleshooting

5692

687

GB

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Summary of Contents for Vitoclima 300-S

Page 1: ... for contractors Vitoclima 300 S Single split air conditioning unit with inverter technology Comprising an external unit and an internal device For applicability see the last page VITOCLIMA 300 S 5692 687 GB 8 2008 Please keep safe ...

Page 2: ...king on this system all legal instructions regarding the prevention of accidents all legal instructions regarding environmental protection the Code of Practice of relevant trade associations all current safety regulations as defined by DIN EN VDE and all locally applicable standards Working on the system Isolate the system from the power supply and check that it is no longer live e g by removing a...

Page 3: ... and wearing parts Please note Spare and wearing parts that have not been tested together with the heating system can compromise its function Instal ling non authorised compo nents and non approved modifications or conversions can compromise safety and may invalidate our warranty For replacements use only ori ginal spare parts supplied or approved by Viessmann Safety instructions cont 3 Safety ins...

Page 4: ...tion and wiring diagrams Internal devices 31 External units 38 Parts lists Parts lists internal devices 42 Parts list external units 43 Commissioning service reports Maintenance checklist Vitoclima 200 S 300 S 44 Specification Specification 46 Specification internal devices 49 Specification external units 51 Certificates Declaration of conformity 52 Keyword index 53 Index 4 Index 5692 687 GB ...

Page 5: ... the condensate drain of the internal device 11 09 Checking the free rotation of the external fan 12 10 Cleaning the heat exchanger of the external unit 12 11 Cleaning the air filter of the internal device 13 12 Replacing or cleaning the electrostatic filter of the internal device if installed 13 13 Replacing the active charcoal filter if installed 13 14 Switching ON the main fuse MCB 15 Switching...

Page 6: ...ps Inspection steps Maintenance steps Page 21 Charging the external unit with refrigerant if units devices must be separated 14 Steps commissioning inspection and cont 6 Commissioning inspection maintenance 5692 687 GB ...

Page 7: ...he power supply check that it is no longer live and safeguard against unauthorised reconnection Evacuating the refrigerant lines and the internal device Note Prior to evacuating the system carry out a leak test pressure test with dried nitrogen A Vacuum pump Further details regarding the individual steps 7 Commissioning inspection maintenance 5692 687 GB ...

Page 8: ...min 5 Close the valve between pressure gauge set C and vacuum pump Stop vacuum pump A and wait 5 min Should the indicated value change within this period that would indi cate a leak Remove the leak and repeat the process 6 Run vacuum pump A until a vacuum has been built the value indicated by the pressure gauge must be near to 0 bar Note The pump runtime will be subject to the ambient conditions 7...

Page 9: ... key F Protective valve cap G Suction line H Liquid line K External unit 1 Remove protective valve caps C and F from valves A and D of external unit K 2 Open valve locksB and E with an Allen key 3 Fit and tighten protective valve caps C and F with 11 to 13 Nm Further details regarding the individual steps cont 9 Commissioning inspection maintenance 5692 687 GB ...

Page 10: ...modification without prior notice Check all flanged connections of the refrigerant lines between the internal device and the external unit for refrig erant leaks Check all soldered points and connec tions of the refrigerant lines in the internal device and the external unit for refrigerant leaks Further work on the refrigeration cir cuit must only be carried out by a qua lified refrigeration engin...

Page 11: ...ll the condensate pan of the internal device with water Should the water not drain fully through the drain hose of the internal device Check the horizontal level of the internal device the condensate pan must have a slope Check the drain of the condensate pan for blockages Check the drain line The slope must be at least 2 along the entire drain line Further details regarding the individual steps c...

Page 12: ...nju ries Avoid contact with the exchanger 2 Please note Excessive air pressure can result in the deformation of the aluminium fins of the heat exchanger Only point the compressed air gun at the heat exchan ger from the front and at an adequate distance Air forced at the aluminium fins from the side will result in their deformation Blow out the heat exchanger from the inside out with compressed air...

Page 13: ...n use a soft brush and mild detergent Let the air filter dry in a cool place Replacing or cleaning the electrostatic filter of the internal device if installed Replace or clean the electrostatic filter every three months in use Note Replace contaminated electrostatic single use filters A reusable filter is available as an option This filter can be cleaned Check the operating instruc tions for info...

Page 14: ...be at least 8 K Charging the external unit with refrigerant if units devices must be separated If the external unit and the internal device must be separated the external unit can be charged with refrigerant 1 Set the system to cooling 2 Close the liquid valve see Fig on page 9 3 Close the suction gas valve see Fig on page 9 when the pressure gauge of the gauge set see Fig on page 8 indicates 0 ba...

Page 15: ... and the external unit This is acknowledged by three short tones and the illumination of the cooling and heating LEDs The remaining LEDs on the internal device flash whilst the diagnosis of the external unit progresses The remaining LEDs on the internal device flash whilst the diagnosis of the internal device progresses Fault codes of the internal device Fault codes are illustrated through the sim...

Page 16: ...ot con nected 6 N A 7 Communication error Incompatible controllers of the internal device and the external unit Replace the controller of the internal de vice 8 No communication Check the connecting cable between the internal device the external unit and earth 9 No code Check fan motor connection replace fan motor Replace the controller of the internal device 10 N A 11 External unit fault Change o...

Page 17: ... heating LEDs illumi nate together Only the heating LED illuminates Fault codes external unit type OS303H OS304H and OS305H Fault codes are illustrated through the simultaneous illumination of the cooling and heating LEDs The heating LED illuminates 5 times in succession Either the cooling LED illu minates at the same time or not This results in the fault code detailed in the following table Note ...

Page 18: ...e external unit 3 Compressor tempera ture sensor not con nected Check sensor connection replace sensor 4 Compressor tempera ture sensor short cir cuit 5 Processor temperature sensor not connected if enabled Check sensor connection replace sensor 6 Processor temperature sensor short circuit if enabled 7 Outside temperature sensor not connected if enabled Check sensor connection replace sensor 8 Out...

Page 19: ...he external unit Replace the controller of the internal de vice 17 No communication Check the electrical con necting cable between the internal device the external unit and earth N A 20 Processor overtem perature cut out 21 Defrosting 22 Compressor over heated 23 Compressor overcur rent 24 No feedback external fan 25 External fan idle 26 Compressor idle Change over to standby and restart 27 Poor c...

Page 20: ...he same time or not Note Only one fault code will be displayed even if several faults have occurred To display further fault codes Switch the unit OFF and isolate it from the power supply Remove the fault Call up the diagnostic function again No Fault code Fault Cause Remedy 5 4 3 2 1 1 Temperature sensor of the heat exchanger of the external unit Check sensor connection replace sensor 2 Compresso...

Page 21: ...sor 13 Max compressor speed exceeded Restart if problem persists replace controller of the ex ternal unit 14 Excessive compressor power consumption Checking the compressor 15 DC undervoltage DC voltage below limit re place external unit controller 16 DC overvoltage Check mains voltage under load max 264 V if OK then replace external unit controller 17 AC undervoltage Check mains voltage under load...

Page 22: ...tion compressor is switched OFF No measure required com pressor delay approx 2 h 29 EEPROM faulty Restart replace external unit controller if EEPROM is re quired operation with speci fic parameters 30 Not configured exter nal unit controller can not be started Restart if problems persist replace external unit control ler 31 Poor transmission quality Check the connecting cable between the internal ...

Page 23: ...tion Display PCB receiver PCB for duct mounted devices faulty Replace PCB PCB internal device faulty Replace PCB No air delivery at the in ternal device Equipment in heating mode and heat exchan ger of the internal device not yet warm Switch to cooling mode and check No low voltage at the fan connection of the PCB Select high speed if vol tage at the motor 130 V Replace PCB Fan capacitor faulty Re...

Page 24: ...hanger of the external unit faulty or incorrect connection Check connection and replace the tempera ture sensor if required Controller of the external unit faulty Replace controller Ice forms at the bottom of the external unit Condensate drain frozen up Connect the on site de frost heater Compressor in the exter nal unit does not run No voltage at the term inals of the external unit Check the conn...

Page 25: ...lly Condensate pan drain or drain pipe blocked Remove blockage Drain pipe incorrectly routed Route the drain pipe with a slope of at least 2 For cassette device Condensate pump does not start Check sensors for con densate level internal device controller and pump Water drips from the bot tom of the external unit Condensate drain blocked Open external unit re move blockage clean the bottom of the e...

Page 26: ...ssor operates with a brush less DC permanent magnet motor The three winding resistances must be identical and be lower than 0 5 Ohm Reversing valve In heating mode the voltage at the reversing valve must be 220 V Electronic expansion valve The voltage at the stepper motor of the valve must be 12 V The EEV must be switched ON simul taneously with the external unit It will generate noise and vibrati...

Page 27: ...he AC power consumption of every phase must be below 1 A If no current flows check the resis tance between the three poles The three winding resistances should be approximately the same The stan dard value would be between 10 and 20 Ω Switch the equipment to standby or OFF and then ON again Replace the external unit controller if the problem persists Compressor Check the compressor connections The...

Page 28: ...motor is OK see above and the internal device still delivers no cooling replace the valve Temperature sensors Check connections and connecting cables At a temperature of 0 to 40 C the sensor resistance should be between 35 and 5 kΩ Communication between the internal device and the external unit Switch the system OFF and then ON again If the fault persists check resistances of the communication cab...

Page 29: ... test mode enables the checking of the air conditioning unit with fixed para meters 1 Set the equipment to cooling 16 C set temperature and a high fan speed or heating 30 C set temperature and a high fan speed See operating instructions 2 Hold down the MODE key at the internal device for duct mounted devices at the receiver for 5 to 10 s Diagnosis cont 29 Troubleshooting 5692 687 GB ...

Page 30: ...or suction line and service valve E Heat exchanger of the internal device with temperature sensor F Valve with connection for liquid line G Filter H Electronic expansion valve K Filter Note The refrigerant circuit is changed over by four way reversing valve B from cooling to heating Refrigerant circuit 30 Refrigerant circuit 5692 687 GB ...

Page 31: ...r at the heat exchanger of the internal device F Ioniser G Electrostatic filter H Stepper motor for air flaps K On site time switch option L Display PCB M Power supply 230 V 50 Hz Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey RD Red WH White Internal devices 31 Connection and wiring diagrams 5692 687 GB ...

Page 32: ... heat exchanger of the internal device G Ioniser H Electrostatic filter K Stepper motor for air flap L Stepper motor for air flap M On site time switch option N Power supply 230 V 50 Hz Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey RD Red WH White Internal devices cont 32 Connection and wiring diagrams 5692 687 GB ...

Page 33: ...rature sensor C Temperature sensor at the heat exchanger of the internal device D Power supply 230 V 50 Hz E Control PCB F Display PCB G Stepper motor for vertical air flap H Condensate overflow switch K Fan L Transformer Internal devices cont 33 Connection and wiring diagrams 5692 687 GB ...

Page 34: ... air flap N Condensate pump O Interface RS485 P On site time switch option Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey RD Red Internal devices cont 34 Connection and wiring diagrams 5692 687 GB ...

Page 35: ... Temperature sensor at the heat exchanger of the internal device D Power supply 230 V 50 Hz E Control PCB F Receiver G Condensate overflow switch H Fan K Stepper motor for horizontal air flap L On site condensate pump option Internal devices cont 35 Connection and wiring diagrams 5692 687 GB ...

Page 36: ...D Red WH White Duct mounted device type D305H A Ioniser option B Fuse T3 15 A slow C On site condensate pump option D On site time switch option E Condensate overflow switch F Room temperature sensor G Temperature sensor at the heat exchanger of the internal device Internal devices cont 36 Connection and wiring diagrams 5692 687 GB ...

Page 37: ...nterface M Power supply 230 V 50 Hz N Fan Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey First floor Orange RD Red VT Violet WH White Duct mounted device type D307H A Ioniser option B Fuse T3 15 A slow Internal devices cont 37 Connection and wiring diagrams 5692 687 GB ...

Page 38: ...ernal device H MegaTool not available K Connection with external unit L Remote control receiver with LEDs and user interface M Fan Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey First floor Orange RD Red VT Violet WH White External units Type OS303H OS304H and OS305H Internal devices cont 38 Connection and wiring diagrams 5692 687 GB ...

Page 39: ...emperature sensor L Suction gas temperature sensor M MegaTool connection not avail able N Electronic expansion valve O Connection with internal device P Fuse R EMI filter PCB 1 Colour coding to DIN IEC 60757 BK Black BN Brown BU Blue GNYE Green Yellow GY Grey First floor Orange RD Red WH White YE Yellow External units cont 39 Connection and wiring diagrams 5692 687 GB 1Filter for electromagnetic i...

Page 40: ...Type OS307H A Control PCB B Power supply PCB External units cont 40 Connection and wiring diagrams 5692 687 GB ...

Page 41: ...t P Compressor temperature sensor R Outside temperature sensor S Accessory connections 1 Night mode switch 2 Standby switch 3 Economy switch 4 Fault output 5 MegaTool not available 6 User interface T Choke coil U Interference filter V Power supply 230 V 50 Hz W Connection with internal device Colour coding to DIN IEC 60757 BN Brown BU Blue GNYE Green Yellow GY Grey First floor Orange RD Red WH Whi...

Page 42: ...y type W303H and W304H 044 Remote control 040 Operating instructions 041 Installation instructions 042 Service instructions Cassette devices type C303H C304H and C305H When ordering spare parts Quote the part and serial no see type plate and the item no of the required part as per this parts list Obtain standard parts from your local supplier Parts 001 Air filter 006 Impeller 007 Fan motor 009 Dis...

Page 43: ...ation instructions 042 Service instructions Parts list external units Type OS303H to OS307H When ordering spare parts Quote the part and serial no see type plate and the item no of the required part as per this parts list Obtain standard parts from your local supplier Parts 001 Compressor 002 Fan motor 003 Fan impeller 004 Four way reversing valve 006 Compressor temperature sensor 007 Temperature ...

Page 44: ... Inlet Outlet Compressor in the external unit Compressor condition Noise emissions test Compressor current Hot gas temperature C Suction gas tempera ture C Liquid pressure bar Vacuum pressure bar Compressor heater option Defrost heater option Refrigerant circuit Soundness Filling level Thermal insulation Four way reversing valve Expansion valves Maintenance checklist Vitoclima 200 S 300 S 44 Commi...

Page 45: ...Cleane d Comments Control unit and electrical equipment Contactors Remote control Cables Temperature sensors Relay Other Tested by Date Maintenance checklist Vitoclima 200 S 300 S cont 45 Commissioning service reports 5692 687 GB ...

Page 46: ...0 4 1 0 0 9 0 4 1 5 4 2 A 3 7 A C304H with OS304H 3 5 1 7 4 8 4 5 1 5 5 8 0 9 0 5 1 3 1 2 0 4 1 6 4 0 A 3 8 A C305H with OS305H 5 0 1 4 6 4 6 0 1 4 7 5 1 6 0 5 2 0 1 7 0 4 2 1 3 2 A 3 6 A D304H with OS304H 3 5 1 5 4 6 4 3 1 6 5 5 1 0 0 4 1 5 1 4 0 4 1 9 3 7 A 3 2 C D305H with OS305H 5 0 1 6 6 4 6 3 1 4 7 7 1 6 0 5 2 2 1 6 0 4 2 0 3 2 A 3 7 A D307H with OS307H 6 8 1 6 8 0 7 6 1 8 8 8 2 4 0 5 2 6 2 ...

Page 47: ...03H with OS303H 2 7 4 2 10 C304H with OS304H 4 0 5 4 C305H with OS305H 7 1 8 0 16 D304H with OS304H 4 3 5 8 10 D305H with OS305H 6 7 7 0 15 16 D307H with OS307H 9 8 9 0 Power cable and connecting lines Power connection on the internal device Type W303H W304H W305H Type C303H C304H C305H Type D304H D305H A Power supply cable B Connecting cable C Internal device D External unit Specification cont 47...

Page 48: ... section A B a 20 m 1 5 mm2 1 5 mm2 a 20 m 2 5 mm2 1 5 mm2 Operating conditions Cooling Heating Internal temperature Minimum C 21 15 wet bulb 10 Standard 1 C 27 19 wet bulb 20 Maximum C 32 23 wet bulb 27 Outside temperature Minimum C 10 15 16 wet bulb Standard C 35 7 6 wet bulb Maximum C 46 24 18 wet bulb Voltage range V 198 to 264 Specification cont 48 Specification 5692 687 GB 1Standard sizing t...

Page 49: ...ons Width mm 810 1060 Height mm 285 295 Length mm 210 210 Weight kg 11 15 Condensate drain pipe internal Ø R mm 16 Cassette devices Internal device C303H C304H C305H External unit OS303H OS304H OS305H Fan 1 radial fan Air flow rate cooling 3 stages m3 h 570 500 435 580 510 435 730 630 510 Air flow rate heating 3 stages m3 h 600 530 450 620 560 450 730 630 510 Sound power level 3 stages dB A 42 48 ...

Page 50: ...0 760 630 530 425 800 670 550 Air flow rate 3 stages m3 h 830 700 530 1170 920 730 1320 1150 935 External static pres sure Pa 30 25 60 25 60 Sound power level 1 3 stages dB A 59 55 52 55 53 50 65 60 55 Sound pressure level 2 3 stages dB A 35 38 42 34 37 42 38 43 47 Dimensions Width mm 860 790 Height mm 245 256 Length mm 680 749 Weight kg 30 29 Condensate drain pipe internal Ø R mm 16 19 Specificat...

Page 51: ... Height mm 610 835 Length mm 290 340 Weight kg 38 39 40 65 Refrigerant Quantity kg 1 1 1 2 1 5 2 4 Sufficient for line lengths up to m 20 20 30 7 5 Volume per additional metre g m not required 1 8 Refrigerant lines Liquid line Connection R Dimensions mm 6 x 1 6 x 1 6 x 1 10 x 1 Suction line Connection R Dimensions mm 10 x 1 10 x 1 12 x 1 16 x 1 Max cable length m 20 20 30 50 Max height differentia...

Page 52: ... 1 2003 09 EN 60 335 1 2001 08 EN 55 014 2 2002 08 EN 60 335 2 40 2001 05 EN 55 022 EN 814 In accordance with the following Directives this product is designated with _ 2006 95 EC 97 23 EC 2004 108 EC 98 37 EC 93 68 EC Details as per Pressure Equipment Directive Category I module A Allendorf 01 08 08 Viessmann Werke GmbH Co KG pp Manfred Sommer Declaration of conformity 52 Certificates 5692 687 GB...

Page 53: ...expansion valve 28 External fan 27 Main fuse MCB 27 Power supply 26 Reversing valve 27 Temperature sensors 28 Connecting line 47 Connection and wiring diagrams 31 D Declaration of conformity 52 Diagnostic mode 15 E Electromagnetic faults 28 Electrostatic filter 13 Evacuating the refrigerant lines and the internal device 7 F Fault codes External unit type OS303H OS304H and OS305H 17 External unit t...

Page 54: ...54 5692 687 GB ...

Page 55: ...55 5692 687 GB ...

Page 56: ...al units Type from serial no OS303H 7245 529 OS304H 7245 530 OS305H 7245 531 OS307H 7245 763 56 Printed on environmentally friendly chlorine free bleached paper 5692 687 GB Subject to technical modifications Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com Viessmann Limited Hortonwood 30 Telford Shropshire TF1 7YP GB Telephone 44 1952 675000...

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