Webasto Thermo 350 Service Manual Page 73
- Page / 93
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
- Water Heaters Workshop Manual 1
- List of Contents 3
- List of Figures 6
- 1. Introduction 7
- Page empty for notes 10
- 2 General Description 11
- 2.1 Combustion Air Fan 12
- 2.2 Fuel Pump 12
- 2.3 Heat Exchanger 13
- 2.4 Combustion Chamber 13
- 2.5 Control Unit 13
- 2.6 Flame Sensor 13
- 2.8 Temperature Sensor 14
- 2.9 Temperature Limiter 14
- (Thermo 231 and 301 only) 14
- 2.11 Circulation Pump 14
- 2.12 Fuel Filter 16
- 3. Functional Description 17
- 3.1 Switch On 18
- 3.2 Heating Operation 18
- 4. Technical Data 23
- Filter Heater 25
- Nominal voltage V - 24 25
- Switch-on point C° 0,5 ± 2,5 25
- Switch-off point C° 5,5 ± 2,5 25
- 5 Troubleshooting 27
- Diagnosis 29
- 5.3.2 Fault Symptoms 30
- Defective" 34
- 6 Functional Checkouts 35
- 20 °C ≅ 4419 ..... 4892 W 36
- 100 °C ≅ 319 ..... 348 W 36
- 6.3.4 Igniter Box Check 37
- 6.3.5 Fuel Pump Check 37
- 6.3.6 Fan Motor Check 38
- 6.3.7 Solenoid Valve Check 38
- 7 Circuit Diagrams 39
- 1 Diagnostic connector 40
- Wire gauges 41
- S3 Switch 44
- 8. Servicing 51
- 8.6.3 Combustion Air Supply 56
- 8.6.4 Exhaust Line 56
- 8.7 Removal and Installation 57
- 8.8 First Operation 58
- 9.1 General 59
- 9.2 Disassembly and Assembly 62
- 9.2.6 Fuel Pump, Replacement 66
- 10 Packaging, Storage and 71
- Shipping 71
- Scheduled Maintenance 73
- Spheros-Service 75
- Spheros GmbH 76
- Technical Information 77
- 01-2009 83
- New spare parts kit for the 90
- Technical Information 02-2010 92
- New Fuel Pumps for Thermo 92
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