2
Thermo plus 160/230/300/350 Content
5.5.3 Error symptom "Low voltage" 507
5.5.4 Error symptom "Extraneous light detected prior to ignition or during purge cycle" 508
5.5.5 Error symptom "Flameguard defective" 509
5.5.6 Error symptoms "Temperature sensor / overheating protection defective" and "Overheating" 509
5.5.7 Error symptom "Circulating pump defective" 509
5.6 Individual component tests 510
5.6.1 General visual inspection 510
5.6.2 Heat exchanger visual inspection 510
5.6.3 Combustion chamber visual inspection 510
5.6.4 Check of the temperature sensor with integrated overheating protection 511
5.6.5 Fan and combustion air intake line visual inspection 512
5.6.6 Burner motor inspection 512
5.6.7 Electronic ignition unit inspection 513
5.6.8 Ignition electrode inspection 514
5.6.9 Flameguard inspection 514
5.6.10 Fuel pump inspection 515
5.6.11 Solenoid valve inspection 516
5.6.12 Nozzle block preheater inspection 517
5.6.13 Circulating pump inspection 518
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 Periodic heater maintenance 701
7.2.2 CO
2
content adjustment 701
8 Burner head, components and heater removal and installation
8.1 General 801
8.2 Burner head 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 Fan wheel removal and installation 803
8.6 Electronic ignition unit and ignition electrode removal and installation 804
8.7 Control device removal and installation 805
8.8 Fuel pump removal and installation 805
8.9 Solenoid valve removal and installation 807
8.10 Nozzle block preheater removal and installation 808
8.11 Fuel nozzle removal and installation 809
8.12 Combustion chamber removal and installation 809
8.13 Heat exchanger removal and installation 810
8.14 Heater removal and installation 810
8.15 Start-up after burner head or heater installation 811
8.15.1 Bleeding the fuel system 811
8.15.2 Bleeding of the coolant circuit 811
9 Modifications and retrofits
9.1 Dust protection for the flame guard 901
9.1.1 Dust protection kit 902
9.1.2 Installation 902