VITODENS 200 WB2A - Heatingspares247.com
VITODENS 200 WB2A - Heatingspares247.com VITODENS 200 WB2A - Heatingspares247.com
7 Internal Wiring DiagramKEY:A1 Main PCB3 Boiler temperature sensor30 Step motor (Diverter valve)(Combi only)54 Ignition unit131 Air Pressure switch149 Flow switch (Combi only)4 DHW outlet sensor (Combi only)5 Comfort sensor (Combi only)47 Temperature limiter100 Fan motor11 Ionisation electrode15 Flue gas temperature sensor50
8 Fault FindingIt is the law that any service work must be carried out by a competent person such as a Britishgas engineer or other CORGI registered personnel8.1 GeneralBefore looking for a fault condition, check that:a) The mains electrical supply is turned on.b) The clock and / or room thermostat (if fitted) are calling for heat (CH ‘faults’ only)c) The gas service cock is open.d) The DHW (Combi only) and CH isolation cocks are open.e) The system is at design pressure.Before attempting any electrical fault finding, always conduct the preliminary electrical systemchecks as described in the Instructions for the British Gas Multimeter or other similarinstrument.On completion of any service or fault finding operation involving making or breaking electricalconnections always check for EARTH CONTINUITY, POLARITY and RESISTANCE TO EARTH.Detailed procedures for replacing faulty components are described in section 9.8.2 Built in Diagnostic FeaturesFeatures are as follows:Troubleshooting stepsDiagnosisEstablish error message or determine behaviour of system.Look for the corresponding cause of the fault in the diagnostic table.CorrectionEstablish the action required in the table.Correct the fault.51
- Page 1 and 2: VITODENS 200 WB2AINSTALLATION & SER
- Page 3 and 4: 1 General Information1.1 Appliance
- Page 5 and 6: 2 Technical Specifications2.2 Gener
- Page 8 and 9: 2 Technical Specifications2.6 Hydra
- Page 10 and 11: 3 Installation Requirements3.1 Stat
- Page 12 and 13: 3 Installation RequirementsPosition
- Page 14 and 15: 3 Installation Requirements3.4 Vent
- Page 16 and 17: 3 Installation RequirementsFigure 3
- Page 18 and 19: 3 Installation Requirements3.5 Cent
- Page 20 and 21: 3 Installation Requirements3.7 Gas
- Page 22 and 23: 4 Installation ProcedureFigure 4/A:
- Page 24 and 25: 4 Installation Procedure4.2.2 Fitti
- Page 27 and 28: 4 Installation ProcedureFigure 4/E:
- Page 29 and 30: 4 Installation Procedure4.7.2 Verti
- Page 31 and 32: 4 Installation Procedure4.8.2 Verti
- Page 33 and 34: 4 Installation Procedure4.9.1 Elect
- Page 35 and 36: 4 Installation Procedure4.11 Conden
- Page 37 and 38: 5 Commissioning and Testing5.1 Fill
- Page 39 and 40: 5 Commissioning and Testing5.3 Vent
- Page 41 and 42: 5 Commissioning and Testing5.6 Comm
- Page 43 and 44: 5 Commissioning and Testing5.9 Fina
- Page 45 and 46: 6 Routine Servicing6.1 Routine Serv
- Page 47 and 48: 6 Routine Servicing6.4 Combustion C
- Page 49: 6 Routine Servicing6.8 Re-commissio
- Page 53 and 54: 9 Replacement of PartsBefore commen
- Page 55 and 56: 9 Replacement of Parts9.3 Burnera)
- Page 57 and 58: 9 Replacement of Parts9.7 Air Press
- Page 59 and 60: 9 Replacement of Parts9.10 Limit Th
- Page 61 and 62: 9 Replacement of Parts9.13 CH Therm
- Page 63 and 64: 9 Replacement of Parts9.16 DHW Heat
- Page 65 and 66: 9 Replacement of Parts9.17 DHW Flow
- Page 67 and 68: 9 Replacement of Parts9.21 Pressure
- Page 69 and 70: 9 Replacement of Parts9.23 Expansio
- Page 71 and 72: 10 Replacement Parts001 Quick Actin
- Page 73 and 74: 10 Replacement Parts004 Temperature
- Page 75: 11 Index6 . . . . . . . . . . . . .
7 Internal Wiring DiagramKEY:A1 Main PCB3 Boiler temperature sensor30 Step motor (Diverter valve)(Combi only)54 Ignition unit131 Air Pressure switch149 Flow switch (Combi only)4 DHW outlet sensor (Combi only)5 Comfort sensor (Combi only)47 Temperature limiter100 Fan motor11 Ionisation electrode15 Flue gas temperature sensor50