Webasto Thermo 90 Workshop Manual

Thermo 90 List of Contents
I
List of Contents
1 Introduction
1.1 Scope and Purpose ..............................................................................................................
................. 101
1.2 Meaning of Warnings, Cautions, and Notes ......................................................................................
.... 101
1.3 Additional Documentation to be used..........................................................................................
.......... 101
1.4 Safety Information and Regulations.............................................................................................
.......... 101
1.4.1 General Safety Notes ........................................................................................................
.......... 101
1.5 Legal Provisions for Installation............................................................................................
................. 102
1.6 Corrections and Improvements.................................................................................................
............. 103
2 General Description
2.1 Combustion Air Fan...........................................................................................................
.................... 202
2.2 Heat Exchanger.................................................................................................................
.................... 202
2.3 Temperature Sensor.............................................................................................................
................. 203
2.4 Temperature Limiter ..........................................................................................................
.................... 203
2.5 Burner Insert................................................................................................................
.......................... 203
2.6 Glow Plug ....................................................................................................................
.......................... 203
2.7 Flame Sensor .................................................................................................................
....................... 203
2.8 Combustion Tube ..............................................................................................................
.................... 203
2.9 Circulation Pump ...............................................................................................................
.................... 203
2.10 Control Unit..................................................................................................................
.......................... 203
2.11 Dosing Pump ..................................................................................................................
....................... 203
3 Troubleshooting
3.1 Switch-on.....................................................................................................................
.......................... 301
3.2 Heating Operation..............................................................................................................
.................... 301
3.3 Control Operation ..............................................................................................................
.................... 301
3.4 Switch-off.....................................................................................................................
.......................... 301
3.5 Functions of the Heater in TRS Vehicles........................................................................................
....... 301
3.6 Malfunctions.................................................................................................................
.......................... 303
3.6.1 Switch-off upon Failure......................................................................................................
.......... 303
3.6.2 Diagnosis after Switch-off upon Failure (Thermo 90)
.................................................................. 303
3.6.3 Diagnosis after Switch-off upon Failure (Thermo 90
S)............................................................... 303
4 Technical Data..
.............................................................................................................................................. 401
5 Troubleshooting
5.1 General........................................................................................................................
.......................... 501
5.2 General Failure Symptoms...................................
................................................................................. 501
5.3 Failure Symptoms after Switch-off upon
Failure.................................................................................... 502
5.4 Visual Inspection for Assessment of Burner Condition
.......................................................................... 503
5.4.1 Burner Housing...............................................................................................................
............. 503
5.4.2 Rear Wall with Metal Evaporator.............................................................................................
.... 504
5.4.3 Combustion Chamber...........................................................................................................
....... 504
5.4.4 Burner Assembly ............................................................................................................
............. 504

Webasto Thermo 90 Specifications

General

Brand	Webasto
Model	Thermo 90
Category	Water Heater
Language	English