Related Manuals for Valeo Thermo E+ 320
Summarization of Contents
Introduction to Thermo E+ Heating Systems
Content and Purpose of Workshop Manual
Defines the manual's scope, heater variants, and personnel requirements for operation.
Workshop Manual Effectivity and Version
Specifies the manual's applicability to listed heaters and indicates the binding version.
Meaning of Highlighted Content Labels
Explains the usage and meaning of Warning!, Caution!, ATTENTION:, and NOTE: labels.
Symbols Used in the Manual
Explains the meaning of symbols, specifically the tightening torque value symbol.
Further Documentation for Heater Service
Lists additional service literature required for working on the heaters.
Safety Information and Regulations
Covers general accident prevention and industrial safety directions for heater operation.
General Safety Regulations for Heaters
Details general safety regulations for the safe operation and installation of the heater.
Other Safety Information for Heaters
Provides specific safety advice regarding the fuel system and temperature sensors.
Suggestions for Improvement and Change
Contact information for providing feedback and suggestions regarding the manual.
Technical Data for Thermo E+ Heaters
Electrical Components Overview
Information on the availability of components in 12V and 24V versions for heaters.
Fuel Specifications and Usage
Details suitable fuels, their specifications, and usage recommendations for cold temperatures.
Assemblies and Components of Thermo E+ Heaters
Burner Assembly
Lists the components that make up the burner assembly.
Combustion Air Fan Function
Explains the function and components of the combustion air fan.
Control Device SG1590
Details the SG1590 control device's function, ports, and integrated flameguard.
Flame Guard Operation
Explains the function of the flame guard as a photo transistor for monitoring combustion.
Fuel Pump and Solenoid Valve
Describes the fuel pump's role in fuel supply and the solenoid valve's function.
Fuel Nozzle Details
Details the fuel nozzle's location, characteristics, and type assignments.
Electronic Ignition Unit Function
Explains the electronic ignition unit's function and important safety warnings.
Nozzle Block Preheater
Describes the nozzle block preheater's function and recommended use in cold conditions.
Temperature Sensor and Overheating Protection
Explains the function of temperature sensors and integrated overheating protection.
Heat Exchanger (Wärmeübertrager)
Explains the heat exchanger's role in transferring combustion heat to the coolant.
Combustion Chamber Function
Details the combustion chamber's use in fuel-air mixture combustion and heating coolant.
Circulating Pump Function
Describes the function of the externally arranged circulating pump for coolant transport.
Heated Fuel Filter Function
Explains the function and activation of the integrated fuel filter heating.
Thermo E+ Heater Functions
General Heater Functionality
Explains the heater's operating principle, components, and flame monitoring.
Operational Heater Sequence
Illustrates the step-by-step operational sequence of the heater from start to shutdown.
Switching On and Start Procedure
Details the initial steps when switching on the heater, including initial cycle.
Heating Operation Phase
Describes the heater's operation during the heating phase and temperature control.
Gradient Evaluation for Temperature Control
Explains how the control unit adjusts switching thresholds based on temperature rise.
Minimum Combustion Period Importance
Discusses the importance of a minimum combustion period and hysteresis adaptation.
Switching Off the Heater
Explains the process of switching off the heater and the subsequent purge cycle.
Diagnosis Interface and DTT Diagnosis
Describes the diagnosability of heaters and the use of DTT diagnosis for checks.
Fault Lock-out and Heater Lock-out
Explains the distinction between fault lock-out and heater lock-out states.
Malfunctions During Start Procedure
Lists malfunction causes occurring during the heater's start-up phase.
Malfunctions During Heater Operation
Lists malfunction causes occurring during normal heater operation.
Malfunctions During Purge Cycle
Lists malfunction causes occurring during the heater's purge cycle.
Fault Lock-out Release and Error Clearance
Explains how to release a fault lock-out and clear stored errors.
Heater Lock-out Procedures
Explains the heater lock-out state and its overriding function and release methods.
Heater Lock-out Release Methods
Details methods for releasing a heater lock-out, with or without DTT diagnosis.
Troubleshooting Thermo E+ Heaters
General Troubleshooting Guidelines
General safety, troubleshooting overview, and common error causes.
Disconnecting Heater from Vehicle Electrical System
Procedures for safely disconnecting the heater from the vehicle's electrical system.
General Error Symptoms and Causes
Lists common error symptoms and their possible causes.
Malfunction Code Output via Flash Code
Explains how error causes are outputted as flash codes via the operating display.
Error Symptoms with Malfunction Codes
Details error symptoms occurring during functional tests with malfunction code output.
"No Start within Safety Period" Symptom
Describes the "No start within safety period" error symptom and its causes.
"Flame Interruption" Symptom
Describes the "Flame interruption" error symptom and related troubleshooting.
"Low Voltage" Symptom
Explains the "Low voltage" error symptom and provides troubleshooting steps.
"Extraneous Light" Symptom
Details the "Extraneous light" error symptom and troubleshooting flowchart.
"Flame Guard Defective" Symptom
Explains that the flame guard cannot be replaced; control device replacement is needed.
"Temperature Sensor / Overheating" Symptoms
Troubleshooting for temperature sensor and overheating issues.
Individual Component Tests
Procedures for inspecting and testing individual heater components like sensors, motors, and pumps.
General Visual Inspection of Components
General visual inspection guidelines for components, plugs, and cables.
Heat Exchanger Visual Inspection
Visual inspection of the heat exchanger interior and exterior for damage and deposits.
Exhaust Outlet and Line Inspection
Inspecting the exhaust outlet and line for conditions, tightness, and deposits.
Combustion Chamber Visual Inspection
Visual inspection of the combustion chamber for damage, cracks, and deposits.
Temperature Sensor Resistance Check
Procedure for checking temperature sensor resistance against provided charts.
Fan, Hood, and Air Intake Inspection
Visual inspection of the fan, hood, and combustion air intake for contamination and deposits.
Burner Motor Inspection
Inspecting the burner motor speed and condition with or without DTT diagnosis.
Electronic Ignition Unit Inspection
Inspecting the electronic ignition unit using DTT diagnosis and associated safety warnings.
Ignition Electrodes Inspection
Inspecting ignition electrodes for correct clear distance and condition.
Flame Guard Inspection
Inspecting the flame guard's function and voltage using DTT diagnosis.
Fuel Pump Inspection
Inspecting the fuel pump pressure and function, with and without DTT diagnosis.
Solenoid Valve Inspection
Inspecting the solenoid valve's electrical functionality and checking for fuel dripping.
Nozzle Block Preheater Inspection
Inspection of the nozzle block preheater heating element and its electrical function.
Manual Inspection of Nozzle Block Preheater
Manual inspection procedure for the nozzle block preheater, including resistance checks.
Wiring Diagrams for Thermo E+ Heaters
General Wiring Information
General information on heater connection options to the vehicle electrical system.
Servicing Thermo E+ Heaters
General Servicing Precautions
General safety warnings and precautions for heater servicing.
Heater Servicing Procedures
Precautions for heater servicing and conditions for tests/inspections.
Maintenance Activities for Reliability
General maintenance activities for ensuring long-term functional reliability.
Periodic Heater Maintenance Schedule
Information on the scope and intervals for periodic heater maintenance.
CO2 Measurement and Setting
Procedures for measuring and setting CO2 content in exhaust gas.
Component and Heater Removal/Installation
General Removal and Installation Notes
General safety hints, disconnection, and component renewal guidelines.
Burner Removal and Installation
Step-by-step procedures for removing and installing the burner.
Temperature Sensor Removal and Installation
Procedures for removing and installing temperature sensors, with safety warnings.
Hood Removal and Installation
Procedures for removing and installing the hood to access components.
Burner Motor Removal and Installation
Detailed steps for removing and installing the burner motor.
Control Device Removal and Installation
Procedures for removing and installing the control device.
Disc with Dust Protection Tube Removal/Installation
Steps for removing and installing the disc and dust protection tube.
Electronic Ignition Unit Removal and Installation
Procedures for removing and installing the electronic ignition unit.
Solenoid Valve Removal and Installation
Steps for removing and installing the solenoid valve.
Fuel Nozzle Removal and Installation
Procedures for removing and installing the fuel nozzle.
Nozzle Block Preheater Removal and Installation
Steps for removing and installing the nozzle block preheater.
Fuel Pump Removal and Installation
Procedures for removing and installing the fuel pump.
Combustion Chamber Removal and Installation
Procedures for removing and installing the combustion chamber.
Heat Exchanger Removal and Installation
Steps for removing and installing the heat exchanger.
Heater Removal and Installation
Procedures for the overall removal and installation of the heater unit.
Post-Installation Start-up Procedures
Steps for starting up the heater after installation or component replacement.
Bleeding the Fuel System
Procedure for bleeding the fuel system before initial start-up.
Bleeding the Coolant Circuit
Procedure for bleeding the coolant circuit according to manufacturer specifications.
Packing, Storage, and Shipping Guidelines
General Packing and Storage Guidelines
Guidelines for cleaning, packaging, and sealing heaters for transport and storage.
Heater Maintenance Schedule
Periodic Heater Maintenance
Information on periodic heater inspection and maintenance intervals.
Electrical Connections Check
Checking electrical plug connections and wiring harness for visible damages.
Heat Exchanger Check
Checking heat exchanger for external damage, cleaning, and removing soot.
Fuel System Check
Inspecting fuel lines, replacing fuel filter, and checking fuel pump.
Burner Head Check
Inspecting combustion air intake, hood, flame detector, electrodes, and solenoid valve.
Exhaust System Check
Inspecting exhaust line, cleaning combustion chamber, and checking connections.
Water System Check
Inspecting, cleaning, or replacing the water filter insert.
Functional Check of Heater
Checking fault memory, clearing it, and verifying heater functionality.
Need help?
Do you have a question about the Thermo E+ 320 and is the answer not in the manual?
Questions and answers