Valeo Thermo E+ 120 - Page 2

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Thermo E+ 120/200/320 Table of contents
1 Introduction
1.1 Content and purpose 101
1.2 Effectivity of the workshop manual 101
1.3 Meaning of highlighted content 101
1.4 Symbols 101
1.5 Further documentation to be used 101
1.6 Safety information and regulations 101
1.6.1 General safety regulations 101
1.6.2 Other safety information 102
1.7 Suggestions for improvement and change 102
2 Technical Data
2.1 Electrical components 201
2.2 Fuel 202
3 Description of assemblies and components
3.1 Burner 302
3.1.1 Combustion air fan 302
3.1.2 Control device 303
3.1.3 Fuel pump with solenoid valve 305
3.1.4 Fuel nozzle 305
3.1.5 Electronic ignition unit 306
3.1.6 Nozzle block preheater 307
3.1.7 Temperature sensors with water temperature sensor and integrated overheating protection 308
3.2 Wärmeübertrager 309
3.3 Combustion chamber 309
3.4 Circulating pump 310
3.5 Heated fuel filter 310
4 Heater functions
4.1 General heater functionality description 401
4.2 Operational heater sequence 402
4.2.1 Switching on and start 402
4.2.2 Heating operation 402
4.2.3 Switching off 403
4.3 Diagnosis interface and DTT Diagnosis 403
4.4 Fault lock-out and heater lock-out 404
4.4.1 Fault lock-out 404
4.4.2 Heater lock-out 405
4.5 Error output 405
5 Troubleshooting
5.1 General 501
5.2 Disconnecting the heater from the vehicle electrical system 501
5.3 General error symptoms 501
5.4 Malfunction code output via flash code 503
5.5 Error symptoms during functional tests with malfunction code output 505
5.5.1 Error symptom "No start within safety period" 505
5.5.2 Error symptom "Flame interruption" 505
5.5.3 Error symptom "Low voltage" 508
5.5.4 Error symptom "Extraneous light detected prior to ignition or during purge cycle" 509
5.5.5 Error symptom "Flame guard defective" 510