Eberspächer AIRTRONIC L – B5, AIRTRONIC L – D5 Troubleshooting And Repair Instructions

Eberspächer

J. Eberspächer GmbH & Co. KG Eberspächerstr. 24 D-73730 Esslingen

Phone (switchboard) (0711) 939-00 Fax (0711) 939-0500

www.eberspaecher.com

25 2361 95 16 95 04.2008 Subject to changes Printed in Germany © J. Eberspächer GmbH & Co. KG

Troubleshooting and Repair Instructions

The troubleshooting and repair instructions are only applicable to the following unit versions

AIRTRONIC L engine-independent air heater for petrol engines

Heater Order No.

AIRTRONIC

L – B5, 12 volt 20 1859 05 00 00

AIRTRONIC L engine-independent air heater for diesel engines

Heater Order No.

AIRTRONIC L – B5, 12 volt 25 2361 05 00 00 AIRTRONIC L – D5, 24 volt 25 2362 05 00 00

Introduction

This list of contents gives you precise information about the contents of the Troubleshooting and Repair Instructions.

If you are looking for a term, technical term or you would like an abbreviation explained, please use the relevant index at the end of the instructions, from page 53.

Introduction

Function

Product information

Troubleshooting

• Contents .................................................................................................. 2 – 3

• Foreword ....................................................................................................... 4

• Safety instructions for installation and repair ................................................... 4

• Accident prevention ....................................................................................... 4

• Special text structure, presentation and picture symbols ............................... 4

• Important information before starting work .................................................... 4

• Cutaway view ................................................................................................. 5

• Functional description ..................................................................................... 6

– Switching on ............................................................................................... 6

– Control in heating mode ............................................................................... 6

– Ventilation mode .......................................................................................... 6

– Switching off ............................................................................................... 6

• Control and safety devices ............................................................................. 7

• Forced shutdown ADR / ADR99 ..................................................................... 7

• Emergency stop (EMERGENCY OFF) ............................................................. 7

• Technical data AIRTRONIC L – petrol / diesel ................................................. 8

• Check values .................................................................................................. 9

– Test speed for the blower ............................................................................ 9

– Resistance values ........................................................................................ 9

– Switching value ............................................................................................ 9

– Exhaust emission specification ..................................................................... 9

– Check “external” temperature sensor ........................................................... 9

– Table of values – “external” temperature sensor............................................ 9

• What to check first in case of faults ............................................................... 10

– Check ........................................................................................................ 10

– Electrical components ............................................................................... 10

– Measure battery voltage ............................................................................ 10

– Measure voltage supply (CI 30) .................................................................. 10

– Check switch-on-signal .............................................................................. 10

– Check control unit ...................................................................................... 10

• Overview of the individual test equipment and control units ..........................11

• Locking the control box ................................................................................11

• Cancel the control box lock .......................................................................... 11

• Check control unit ........................................................................................ 12

– Before the test .......................................................................................... 12

– Check the setpoint potentiometer of the control unit .................................. 12

• Fault diagnosis using the diagnostic unit ................................................. 13, 14

• EDiTH customer service program with ISO adapter .................................... 15

• EDiTH customer service program with basic adapter ................................... 16

• Fault diagnosis using the module timer ........................................................ 17

• Fault diagnosis using the radio remote control TP5 ...................................... 18

• EasyStart R+ radio remote control .............................................................. 19

• Fault code table .................................................................................... 20 – 24

List of Contents

Chapter Title Contents Page

Introduction

Repair instructions

Circuit diagram

Service

Index

Chapter Title Contents Page

List of Contents

• Repair instructions........................................................................................ 25

• Always observe the following safety instructions

before working on the heater ........................................................................ 25

• Special tool AMP release tool ...................................................................... 25

• Assembly drawing ........................................................................................ 26

• Parts list ....................................................................................................... 27

• Repair step 1

Dismantle / assemble glow plug ................................................................... 28

• Repair step 2

Dismantle / assemble lining ........................................................................... 28

• Repair step 3

Dismantle / assemble control box ................................................................ 28

• Repair step 4

Dismantle / assembly combination sensor (overheating / flame sensor) ........29

Check combination sensor ........................................................................... 30

• Repair step 5

Dismantle / assemble combustion air fan ......................................................30

• Repair step 6

Replace the combustion chamber cover seal ............................................... 32

• Check fuel supply ......................................................................................... 33

• Measuring the fuel quantity ........................................................................... 33

• Parts list AIRTRONIC L – 12 volt / 24 volt .................................................... 34

• Parts list AIRTRONIC L – ADR – 12 volt / 24 volt ......................................... 34

• Circuit diagram AIRTRONIC L – 12 volt / 24 volt .......................................... 35

• Circuit diagram for control units ............................................................36 – 40

• Circuit diagram AIRTRONIC L – ADR – 12 volt / 24 volt ...............................41

• Circuit diagram control units – ADR .............................................................. 42

• Parts list circuit diagram control unit EasyStart R+ / R / T ............................43

• Pin assignments ........................................................................................... 44

• Circuit diagram control units – EasyStart R+ ................................................ 45

• Circuit diagram control units – EasyStart R ............................................ 46, 47

• Circuit diagram control units – EasyStart T ................................................... 48

• Circuit diagram control units – EasyStart T – ADR........................................ 49

• Certifications ................................................................................................. 41

• Disposal ....................................................................................................... 41

• EC Declaration of Conformity ....................................................................... 41

• Representatives abroad ......................................................................... 42, 43

• Index ............................................................................................................ 44

• List of abbreviations ..................................................................................... 45

Introduction

These Troubleshooting and Repair Instructions are applicable to the heaters listed on the title page, to the exclusion of all liability claims. Depending on the version or revised status of the heater, there may be differences between it and these troubleshooting and repair instructions. The user must check this before carrying out the repair work and, if necessary, take the differences into account.

Caution!

Safety instructions for installation and repair!

Improper installation or repair of Eberspächer heaters can cause a fire or result poisonous exhaust entering the inside of the vehicle. This can cause serious and even fatal risks.

The heater may only be installed according to the specifications in the technical documents or repaired using original spare parts by authorised and trained persons. Installation and repairs by unauthorised and untrained persons, repairs using non-original spare parts and without the technical documents required for installation and repair are dangerous and therefore are not permitted.

A repair may only be carried out in connection with the respective unit-related technical description, installation instructions, operating instructions and maintenance instructions. This document must be carefully read through before / during installation and repair and followed throughout. Particular attention is to be paid to the official regulations, the safety instructions and the general information.

The relevant rules of sound engineering practice and any information provided by the vehicle manufacturer are to be observed during the installation and repair. Eberspächer does not accept any liability for defects and damage, which are due to installation or repair by unauthorised and untrained persons. Compliance with the official regulations and the safety instructions is prerequisite for liability claims. Failure to comply with the official regulations and safety instructions leads to exclusion of any liability of the heater manufacturer.

Accident prevention

General accident prevention regulations and the corresponding workshop and operating safety instructions are to be observed.

Please note!

Special text formats and picture symbols are used in these instructions to emphasise different situations and subjects. Please refer to the following examples for their meanings and appropriate action.

Special text formats and presentations

• A dot (•) indicates a list, which is started by a heading. – If an indented dash (–) follows a „dot“, this list is a sub-

section of the black dot.

Picture symbols

Danger!

This information points out a potential serious or fatal danger. Ignoring this information can result in severe injuries.

Caution!

This information points out a dangerous situation for a person and / or the product. Ignoring this information can result in injuries to people and / or damage to machinery.

Foreword Special text structure, presentation and

picture symbols

Important information before starting work

Initial commissioning of the heater or functional test after a repair

• After installing the heater, the whole fuel supply system must be carefully vented: please refer to and follow the vehicle manufacturer’s instructions.

• During the heater trial run, all fuel connections must be checked for leaks and secure, tight fit.

• If faults occur while the heater is running, use a diagnostic unit to determine and correct the cause of the fault

Function

Cutaway view

1 Module timer 2 Changeover switch „heat / ventilate“ 3 Fuse bracket

– Main fuse 25 A

– Fuse, „actuation“ 15 A 4 Heater impeller 5 Control box 6 Intake hood 7 Combustion air fan 8 Glow plug 9 Jacket shell, top 10 Combination sensor (overheating and flame sensor) 11 Outlet hood 12 Outflow 13 Safety grille 14 Electrical motor 15 Combustion air intake silencer

16 Fuel connection 17 Combustion chamber 18 Flame pipe 19 Heat exchanger 20 Jacket shell, bottom 21 Metering pump 22 Pot-type strainer 23 T-piece 24 Exhaust pipe

F = Fresh air W = Hot air V = Combustion air A = Exhaust B = Fuel

Function

Description of functions

Switching on / starting the heater

When the heater is switched on, the control lamp in the control unit lights up. The fan starts up in the fan stage "LOW". The glow plug starts with a 3 second delay. After approx. 45 seconds the fuel supply starts and the fuel / air mixture in the combustion chamber ignites. The fan switches from fan stage "LOW" to fan stage "MEDIUM". The glow plug is switched off after 165 seconds, when a stable flame has formed. The fan switches from fan stage "MEDIUM" to fan stage "HIGH". The heater is run at an increased heating capacity of 5.5 kW (stage "POWER") in order to quickly reach the heater's operating temperature. If the heater's operating temperature has been reached, the heating capacity is reduced to 4.8 kW (stage "HIGH"). The length of time for which the heater is run with an increased heating output depends on the ambient temperature.

Control in heating mode

If the intake or ambient temperature set at the control device (10 °C up to 30 °C) has been reached, the heater switches to the “LOW“ control level and then continues to run with a low fan motor speed.

If the heat flow at the “LOW“ control level of 1.2 kW or 2.0 kW is insufficient, the heater switches to the “MEDIUM“ control level. The fan continues to run at a low speed. In most cases the “LOW – MEDIUM – LOW“ control at a low speed will cover the heating requirements.

If the heat flow at the “MEDIUM“ control level is insufficient, the heater switches back to the “HIGH“ control level. This in turn requires the full fan motor speed. If, in special cases, even less heat flow is required than supplied by the heater at the “LOW“ control level, the heater switches to “OFF“.

The fan then continues to run for approx. 4 – 5 minutes and, only in recirculation mode, constantly ventilates until it is restarted. The restart takes place at the “MEDIUM“ control level at a low fan motor speed.

Ventilation mode

If the heater is set to “Ventilation“ at the control element, the fan runs at maximum speed.

Switching off

When the heater is switched off, the control lamp goes out and the fuel delivery is switched off. The fan continues to run for approx. 4 – 5 minutes to cool down.

Function

Please note!

Control and safety devices

• If the heater does not ignite within 90 seconds after the fuel

starts to pump, the start is repeated. If the heater still does not ignite after another 90 seconds of pumping fuel, the heater is switched off, i.e. the fuel supply is off and the fan runs on for approx. 4 – 5 minutes. After an unacceptable number of failed start attempts, the control box is locked.*

• If the flame goes off by itself during operation, the heater is

restarted. If the heater does not ignite within 90 seconds after the fuel pump has restarted, or ignites and goes off again within 15 minutes, the heater is switched off, i.e. the fuel supply is off and the fan runs on for approx. 4 – 5 minutes. This automatic switching off can be cancelled by briefly switching off and on again. Do not repeat the switching off / on routine more than twice.

• In the case of overheating, the combined sensor (flame

sensor / overheating sensor) triggers, the fuel feed is interrupted and the heater switched off. Once the cause of the overheating has been eliminated, the heater can be restarted by switching off and on again. After an unacceptable number of failed start attempts, the control box is locked.*

• If the lower or upper voltage limit is reached, the heater is

switched off after 20 seconds.

• The heater will not start if the glow plug or blower motor is

defective or if the electric lead to the metering pump is interrupted.

• If the combined sensor (flame sensor / overheating sensor)

is defect or the electric lead interrupted, the heater starts up and is then switched off again during the start phase.

• The speed of the blower motor is continuously monitored. If

the blower motor does not start up or if the speed deviates by more than 10 %, the heater is switched off after 30 sec.

• When the heater is switched off, the glow plug is switched

on for 40 seconds (after glowing) while the fan runs on, in order to clean off any combustion residues.

* The lock can be cancelled and the faults read off:

• using the module timer / EasyStart T

• using the radio remote control TP5 / EasyStart R+. For other controls:

• by connecting the diagnostic unit

• using the customer service program KD2000 / EDiTH. For operation and fault list, please refer to Page 13 – 24.

Do not repeat the switching off / on routine more than twice.

Forced shut-down during ADR / ADR99 operation

In vehicles for the transport of dangerous goods (e. g. tankers), the heater must be switched off before the truck drives into a danger area (refinery, petrol station, etc.). Failure to comply results in the heater automatically switching off if:

• The vehicle engine is switched off.

• An additional unit is started up (e. g. auxiliary drive for unloading pump, etc.).

• A vehicle door is opened (ADR99 regulation, only in France).

The fan then continues to run briefly, for max. 40 seconds.

Emergency stop – EMERGENCY OFF

If an emergency stop – EMERGENCY OFF – is necessary during operation, proceed as follows:

• Switch the heater off at the control unit or

• pull the fuse out or

• disconnect the heater from the battery.

AIRTRONIC L – B5 AIRTRONIC L – D5

Air Air

Stage Stage

Power High Medium Low Power High Medium Low

5500 4800 2700 1200 5500 4800 2700 1500

280 275 180 125 280 275 180 125

10 10

0.75 0.65 0.37 0.27 0.66 0.58 0.34 0.19

85 80 30 15 85 80 30 15

< 250 < 250

12 12 / 24

approx. 10 volt and 20 volt respectively

Undervoltage protection trigger time: 20 seconds

approx. 14 volt and approx. 28 volt respectively Overvoltage protection trigger time: 20 seconds

Petrol – standard commercial quality Diesel fuel – standard commercial

(DIN EN 51600 / DIN EN 228) quality (DIN EN 590)

Heater Control Metering Heater Control Metering

box pump box pump

–40 °C to –40 °C to –40 °C to –40 °C to –40 °C to –40 °C to

+50 °C +75 °C +20 °C +70 °C +75 °C +50 °C

–40 °C to –40 °C to –40 °C to –40 °C to –40 °C to –40 °C to

+85 °C +85 °C +85 °C +85 °C +85 °C +85 °C

+40 °C

Suppression class 5 to DIN EN 55025

approx. 9.3 kg

Possible

Product information

Technical data

Heater

Heating medium

Control of the heat flow

Heat flow (watt)

Heater air flow rate without counterpressure (kg/h)

Heater code

Fuel consumption (l/h)

Elect. power consumption (watt) in operation

while starting

Rated voltage (volt)

Operating range

Lower voltage limit: An undervoltage protector installed in the control box switches off the heater when the voltage limit is reached.

Upper voltage limit: An overvoltage protector installed in the control box switches off the heater when the voltage limit is reached.

Fuel

Permissible ambient temperature

Operation

Storage

Maximum air intake temperature

Interference suppression

Weight

Ventilation mode

Caution!

Safety instructions for technical data!

Failure to comply with the technical data can result in malfunctions.

Provided no limit values are given, the technical data listed is subject to the tolerances usually applicable to heaters of ±10% for nominal voltage, ambient temperature 20 °C and reference altitude Esslingen.

Please note!

Test speed for the blower

Heater 12 volt

At 11.3 volt n = 4650 – 7000 U/min

Heater 24 volt

At 23.6 volt n = 4650 – 6500 U/min

Resistance values 12 V 24 V

Glow plug (heat resistance) ca. 0.6 Ω ± 0.04 Ω ca. 2 Ω ± 0.2 Ω Metering pump 9.5 Ω ± 0.50 Ω 36.0 Ω ± 1.8 Ω Control device setpoint value potentiometer 1750 Ω ±30 Ω – 2180 Ω ±80 Ω

Switching value

Overheating sensor 140 °C – 170 °C

measured in the “POWER” control stage and at a distance of 300mm downstream from the hot air outlet.

Exhaust emission specification CO

in exhaust

in control stage “HIGH” 7.5 – 12.5 Vol. % Smoke spot number < 4 according to Bacharach

Check values

Temperature (°C)

Resistance (ohm)

2200 2000 1800 1600 1400 1200 1000

–40

–20

02040–10

–30

10 30

2400

Check “external” temperature sensor

(Order No.: 25 1774 89 03 00) The “external” temperature sensor test must be carried out using a digital multimeter. If the resistance value is not the same as the curve in the diagram or the table of values, replace the temperature sensor.

Product information

Table of values – “external” temperature sensor

Temperature °C Resistance Ω min. max.

016001660

516701730 10 1745 1800 15 1820 1870 20 1895 1950 25 1970 2030 30 2050 2110 35 2130 2190 40 2210 2280 45 2295 2370

What to check first in case of faults

• Check

– Fuel in the tank? – Fuel pipes leaking? (visual check) – Summer diesel in the fuel pipe? – Combustion air system or exhaust system damaged or

blocked?

• Electrical components

– Cables, connections damaged? – Contacts corroded? – Fuses defective? – Incorrect wiring? (short circuits, interrupted / broken)

• Measure battery voltage

– Battery voltage < 10.5 volt, the undervoltage protection

of the 12 volt heater has triggered.

– Battery voltage < 21 volt, the undervoltage protection of

the 24 volt heater has triggered.

• Measure voltage supply (Cl 30)

Disconnect the 16-pin connector S1 / B1 and measure the voltage applied at connector B1 between chamber 1 (cable

2.52 rt) and chamber 10 (cable 2.52 br). If it differs from the battery voltage, check the fuses, the supply cables, the negative connection and the positive support point on the battery for voltage drop (corrosion / interruption).

• Check switch-on signal

Disconnect the 16-pin connector S1 / B1 and then switch on the heater at the control unit. Check whether voltage is applied in the connector B1 between chamber 4 (cable 0.52 ge) and chamber 10 (cable

2.52 br). If no voltage is measured, then check the supply cable (cable

0.52 ge), the 5 A fuse (item 2.7.1 in the circuit diagram) and the control unit.

• Check control unit

Disconnect the connector at the control unit, jumper between the red 0.52 cable and the yellow 0.52 cable. If a voltage is measured in connector B1 between chamber 4 (cable 0.52 ge) and chamber 10 (cable 2.52 br), then replace the control unit.

Troubleshooting

Overview of the individual test equipment and control units

The electronic control box can store up to 5 errors, which can be read out and displayed. The following test equipment can be used to query the fault memory in the control box and if necessary to delete the control box locking:

Test equipment Order No.:

• Testing device for the control device 22 1509 89 00 00

• Diagnostic unit 22 1529 89 00 00 additionally required: Adapter cable 22 1000 31 86 00

• EDiTH Customer service program 22 1532 89 00 00 – Basic adapter with software 22 1532 89 00 00

Also required: AIRTRONIC extension 22 1537 89 00 00

– ISO adapter 22 1524 89 00 00

Also required: Adapter cable 22 1000 31 86 00

If a diagnostics cable is connected, the following control units can also be used:

Control units Order No.:

• Module timer 22 1000 30 34 00

• TP5 radio remote control 22 1000 32 01 00

• EasyStart T 22 1000 32 88 00

• EasyStart R+ 22 1000 32 80 00

If the fault memory cannot be read out, check the diagnostics cable for correct laying and possible damage.

Locking the control box

The control box is locked if the following faults occur:

• Too many attempted starts

If the heater carries out several failed start attempts in succession – fault code 050 is displayed –> the control box is locked.

• Overheating

If the heater overheats several times in succession – fault code 015 is displayed –> the control box is locked.

Cancel the control box lock

Cancellation of the control box lock depends on the appropriate test equipment and is described on pages 13 – 19.

Please note!

Troubleshooting

Caution!

Operating voltage safety information!

Ensure you use the correct operating voltage, otherwise the connected components can be severely damaged.

Check control unit

Order No. for the testing device – control unit – 22 1509 89 00 00

Before the test

Connect the correct operating voltage (12 or 24 volt) to the testing device, with plus at the red connector socket and minus at the blue connector socket.

• Disconnect socket from the control unit.

• Connect cable loom from testing device with the control unit.

• Set the rotary knob of the control unit to „Heat“, the corresponding red LED in the testing device must light up.

• Set control unit to „0“, then press the „LED – red“ button, the red control lamp in the control unit must light up.

• Set control unit to „Heat“, then press the „LED – green“ button, corresponding red control lamp in the testing device and the green control lamp in the control unit must light up.

Check the setpoint potentiometer of the control unit

Set the “Temperature sensor / Potentiometer“ switch in the testing device to the “Potentiometer“ setting and slowly turn the rotary knob of the control unit. The green LED – temperature sensor / potentiometer must light up continuously. In case of a fault, replace the control unit.

––– OFF

Heat

Display of the fault memory F1 – F5 or F5 – F1

• The heater is switched on.

• Press the buttons e and f once or several times to display the individual fault memory positions, in ascending or descending order. Display is as follows:

e.g. fault memory 2 / fault code 10

Only the fault memory positions with an error code assigned to them are displayed.

Delete fault memory

• Correct cause of fault.

• Press button D –> the heater is switched on.

• Press both L keys simultaneously until the following appears in the display:

Display flashes, heater symbol does not flash

If all the fault memory positions have been deleted the most recent fault is displayed. The most recent fault is not reset to 00 until the heater is restarted. Display is as follows:

Heater has no malfunction

If a new, most recent fault exists it is displayed.

Connect diagnostic unit

• Disconnect the 16-pin connector of the heater’s cable harness and connect the adapter cable.

• The connect the diagnostic unit to the adapter cable.

After the adapter cable and diagnostic unit have been connected the following appears in the display.

It is very important to always install in the given order. Fault code, fault description, cause / remedial action are described on Pages 20 to 24.

Enquire fault memory

The current fault is displayed as „AF“ and a 2-digit number and is always written in the memory location F1. Preceding faults are moved to the memory locations F2 – F5, if necessary the content of F5 is overwritten.

• Press button D –> the heater is switched on. Display is as follows:

• After 8 sec. the following appears in the display:

No fault

e.g. current fault / fault code 64

Fault diagnosis not possible

Possible causes: – Adapter cable is not properly connected. – Control box is defective or not diagnosable

(not a universal control box).

Troubleshooting

Fault diagnosis using the diagnostic unit

Diagnostic unit Order No. 22 1529 89 00 00

An adapter cable is required to connect the diagnostic unit.

Adapter cable Order No. 22 1000 31 86 00

button – Delete fault memory

button – Switch heater on / off, request diagnosis

button – Reverse, fault F5 – F1, AF

button – Forward, fault AF, F1 – F5

Please note!

Troubleshooting

Cancel the control box lock

• Delete the fault memory as described and switch off the heater using the d button.

• The control box lock is cancelled and the diagnosis closed. Display is as follows:

Please note!

Not only the defective component, but also a defective current circuit results in a fault being displayed.

1 Heater 2 Adapter cable 3 Diagnostic unit

Troubleshooting

EDiTH customer service program with ISO adapter

Order No. 22 1524 89 00 00

An additional adapter cable is required to connect the ISO adapter (Order No.: 22 1000 31 86 00).

• It is very important to always install in the given order.

• Not only the defective component, but also a defective current circuit results in a fault being displayed.

• Fault code, fault description, cause / remedial action are described on Pages 20 – 24.

• The scope of supply does not include the EDiTH customer service software; this must be downloaded from the service portal.

Connect ISO adapter

• Disconnect the heater’s cable harness.

• Connect the adapter cable to the cable harness – as shown in the sketch.

• Connect the adapter cable to the ISO adapter.

• Connect the SUB-D connection cable with the PC and the ISO adapter.

Installing the software on your PC

• Double-click the „setup.exe“ file to start the installation and following the SETUP program instructions.

Enquire / delete fault memory F1 – F5 or cancel the control box lock

• Start the software on your PC: – On the desktop

–> Double click the „EDiTH“ icon. – Select heater type. – Press the „GO“ button.

• Delete fault memory or cancel the control box lock: – Press the „Delete fault memory“ button

—> the stored faults F1 – F5 are deleted and the control box is unlocked.

Quit diagnosis

• Press the „STOP“ button –> fault memory enquiry is ended.

Please note!

1 Heater 2 Adapter cable

3 ISO adapter 4 SUB-D connection cable

Troubleshooting

Caution! Magnetic field!

During the test operation a magnetic field develops at the adapter. Therefore, do not place any objects such as data media, credit cards, etc. on the adapter or in its immediate vicinity.

1 Basic adapter 2 SUB-D connection cable 3 Mains connection 4 Mains switch 5 Control box 6 Adapter

Cable colours

sw = black gn = green bl = blue

EDiTH customer service program with basic adapter

EDiTH basic adapter (Order No.: 22 1532 89 00 00)

An additional extension is required to check the control box (Order No.: 22 1537 89 00 00).

• It is important to always follow the precise connection order as given below!

• The Hall sensor integrated in the control box can only be properly tested in the control box is correctly placed on the extension.

• Only push or pull on the connectors, not on the cables!

• Only use the network cable and RS232 cable with snap ferrites included in the scope of supply. Use original accessories with snap ferrites only to connect the test equipment.

• Not only the defective component, but also a defective current circuit results in a fault being displayed.

• Fault code, fault description, cause / remedial action are described on pages 20 – 24.

Connect basic adapter

• Start computer and wait until the system has successfully booted.

• Start PC software.

• Insert the unit connector of the mains cable in the basic adapter (A) and connect the mains connection (C) to the mains.

• Connect the SUB-D connection cable (B) with the PC and basic adapter (A).

Connect extension and test control box

• Connect the extension to the basic adapter (A).

• Connect the control box (E) to the extension and the adapter (F).

• Switch on the basic adapter (A) at the mains switch (D).

• Select the control box version and operating voltage (12 V / 24 V) in the PC software.

• Start the control box test with the PC software. A more detailed description of how to operate the basic adapters (A) is given in the EDiTH online help.

Please note!

Troubleshooting

Module timer

(Order No.: 22 1000 30 34 00)

The current fault is displayed as “AF” and is always written in memory position F1. Preceding faults are moved to the memory locations F2 – F5, if necessary the contents of memory position F5 is overwritten.

• Not only the defective component, but also a defective current circuit results in a fault being displayed.

• Fault code, fault description, cause / remedial action are described on pages 20 – 24.

Query fault memory F1 – F5

Condition: The heater is switched off.

• Press c key –> the heater is switched on.

• Press a key and keep pressed, then press p key within 2 seconds. Display is as follows: AF = current fault 3 digit number = fault code

flashes.

• Press f key once or several times, fault memory positions F1 – F5 are displayed.

Cancel the control box lock and simultaneously delete the fault memory

Condition: An electrical connection exists from terminal 15 (ignition) to the module timer, 12-pin connector, chamber 10.

• Press c key Display is as follows: the current fault F15 or F50.

• Press button a, keep it depressed and then press button

within 2 seconds.

The module timer is now in the “Query fault memory” program.

• Switch off ignition (terminal 15).

• Simultaneously press button a and button p, in addition, switch on the ignition (terminal 15) and wait until the following appears in the display.

After ignition “ON” the following appears in the display:

Display flashes, Heater symbol does not flash

• Switch the heater off and on –> the control box is unlocked, the heater restarts.

After switching the heater off and on and renewed query of the fault memory, the following appears in the display:

Display flashes, Heater symbol does not flash

–Time

–Preset

–Heat

–Reverse

–Forward

Please note!

+ 37 hidden pages

Eberspächer AIRTRONIC L – B5, AIRTRONIC L – D5 Troubleshooting And Repair Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual