1 Introduction Thermo E 200 / 320
2
5 Troubleshooting and error correction
5.1 General 501
5.2 General error symptoms 501
5.3 Malfunction code output via flash code 503
5.4 Error symptoms during functional tests with malfunction code output 505
5.4.1 Error symptom "No start within safety period" 505
5.4.2 Error symptom "Flame interruption" 505
5.4.3 Error symptom "Low voltage" 507
5.4.4 Error symptom "Extraneous light detected prior to ignition or
during purge cycle" 508
5.4.5 Error symptom "Flame detector defective" 509
5.4.6 Error symptoms "Temperature sensor / overheating protection
defective" and "Overheating" 509
5.5 Individual component tests 510
5.5.1 General visual inspection 510
5.5.2 Heat exchanger visual inspection 510
5.5.3 Combustion chamber visual inspection 510
5.5.4 Resistance check of the temperature sensor with
integrated overheating protection 510
5.5.5 Fan and combustion air intake line visual inspection 511
5.5.6 Burner motor inspection 511
5.5.7 Electronic ignition unit inspection 511
5.5.8 Ignition electrode inspection 512
5.5.9 Flame detector inspection 512
5.5.10 Fuel pump inspection 513
5.5.11 Solenoid valve inspection 514
5.5.12 Nozzle block preheater inspection 514
6 Wiring diagrams
6.1 General 601
7 Servicing
7.1 General 701
7.1.1 Heater servicing 701
7.2 Servicing 701
7.2.1 CO2 Measurement and setting 701
8 Burner, components and heater removal and installation
8.1 General 801
8.2 Burner removal and installation 802
8.3 Removal and installation of the temperature sensor with
integrated overheating protection 803
8.4 Hood removal and installation 803
8.5 Burner motor removal and installation 803
8.6 Electronic ignition unit and ignition electrode removal and installation 805
8.7 Control unit removal and installation 807
8.8 Fuel pump removal and installation 807
8.9 Solenoid valve removal and installation 808
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