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Electrolux AOS202E Series - User Manual

Electrolux AOS202E Series
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Electrolux Professional S.p.A.
Ovens Platform Customer Support
Technical Training & Service
AOS OVENS - Service Manual
(595889300 - ENG)
AOS OVENS
- Service Manual -
CONTENTS:
This document contains the information about parameters that can be
read and/or modified by means of user interface, service utilities, ...
PROJECT REF:
AOS ovens
AUTHORS:
A.Canova
CONTRIBUTION BY:
D.Vadori F. Fingolo
DOCUMENT HISTORY:
Rel. Date: File: Author: Note:
001 11/12/2002 ECS service manual (ENG).001 A. Canova Valid for firmware 2.30
002 15/01/2003 ECS service manual (ENG).002 A. Canova
Valid for any firmware (references only
to parameter names)
003 21/03/2003 ECS service manual (ENG).003 A. Canova
New features from firmware 2.50 and
updating of paragraphs, error list
004 05/12/2003 AOS service manual (ENG).004 A. Canova
Gas ovens; AOS instead of ECS;
corrected calibration procedures;
firmware 2.6 (reduced the number of
parameter so that some of the
parameters in the manual are related to
old firmware releases)
004a 23/01/2004 AOS service manual (ENG).004a A. Canova
Corrected aerator mistake on 20 1/1
gas boiler.
005 06/04/2004 AOS service manual (ENG).005 A. Canova
New features from firmware 2.7, 2/1
gas ovens, added appendix B-C-D
006 05/07/2004 AOS service manual (ENG).006 A. Canova
New calibrations for AOS061G and
AOS101G, updated appendix C-D,
added appendix E-F-G
007 18/02/2005 AOS service manual (ENG).007 A. Canova
Updated appendix D, calibration of
AOS061G and added appendix H-I
008 13/06/2005 AOS service manual (ENG).008 A. Canova
Updated calibrations for AOS101G,
AOS201G, AOS102G, AOS202G;
firmware 2.80
File: AOS service manual (ENG).008 ©Copyright 2002 by Electrolux Professional P.1/40

Questions and Answers

  • S
    Stephanie KelleyAug 16, 2025
    What to do if my Electrolux Oven does not switch on and the ON/OFF led is off?
    • T
      Tara HallAug 17, 2025
      If your Electrolux Oven doesn't switch on and the ON/OFF LED is off, it could be due to the main board not being powered. Check if voltage is present (24 Vac) at the main board input (X1 connector). Also, check the voltage output (24 Vac) on the transformer and inspect the F1 fuse.
  • C
    Connie JonesAug 19, 2025
    What to do if my Electrolux Oven does not switch on and the ON/OFF led is on?
    • C
      Christopher McguireAug 19, 2025
      If your Electrolux Oven does not switch on, but the ON/OFF led is on, it might be due to overtemperature of the main board. Check if the cooling fan is working. Also, ensure the openings on the bottom of the control panel are not clogged. If these steps don't resolve the issue, the main board may need to be replaced.
  • C
    Crystal RosalesAug 22, 2025
    Why is the heating of the cavity slow in my Electrolux AOS202E Oven?
    • S
      Susan TaylorAug 22, 2025
      Slow heating of the cavity in your Electrolux Oven can be caused by a burnt heating element. Verify that all branches of the cavity heating elements are working. Also, check the correct functioning of the contactors.
  • M
    Mr. Aaron WilsonAug 25, 2025
    Why is the heating of the boiler slow in my Electrolux Oven?
    • L
      Lori SaundersAug 26, 2025
      If the boiler in your Electrolux Oven is heating slowly, it could be due to a burnt heating element. Check that all the branches of the boiler heating elements are working correctly. Also, ensure the contactors are functioning as expected.
  • M
    Morgan WardAug 27, 2025
    What to do if the fan of a burner does not start in Electrolux Oven?
    • J
      John BautistaAug 27, 2025
      If the fan of a burner in your Electrolux Oven isn't starting, check if the fan is powered with 24 Vdc from the relevant switching feeder. If there is no power, check the fuse on the relevant switching feeder. You can also exchange the PWM cable between the cavity and boiler fan to see if the fan starts. Also, check if a high voltage digital signal is present on X10/11-5÷8. As an additional check, close the gas tap, disconnect connector X9, and try to start the burner: the fan should run at maximum speed. If it doesn't, replace the fan. If it does start, replace the main board.
  • E
    Eric FergusonAug 30, 2025
    What to do if the user interface board does not switch on in Electrolux AOS202E?
    • K
      Kathryn ThomasAug 30, 2025
      If the user interface board of your Electrolux Oven does not switch on, check the correct connection of the power supply cables of the user interface board on the main board. Also, check the connection of the flat cable on the main board.
  • S
    shannongarzaSep 2, 2025
    What to do if the user interface board does switch on but no load is activated in Electrolux AOS202E Oven?
    • G
      gwilliamsSep 2, 2025
      If the user interface board of your Electrolux Oven switches on, but no load is activated, check the F2 fuse.
  • M
    Mary GomezSep 4, 2025
    Why is the fan of a burner working always at the maximum speed in Electrolux AOS202E?
    • J
      Joseph ShafferSep 4, 2025
      If the fan of a burner in your Electrolux Oven is always working at maximum speed, the PWM signal may be missing. Check if the connector of the PWM signal (X9) on the main board is connected and ensure the PWM signal cable is not interrupted.
  • S
    Steven JonesSep 7, 2025
    What does it mean if in the recipe menu only signs like "P: Sxx" o "Sxx" are appearing in Electrolux AOS202E?
    • J
      john63Sep 7, 2025
      If you are seeing only signs like "P: Sxx" or "Sxx" in the recipe menu of your Electrolux Oven, it indicates that the EEPROM of the main board is not programmed. You may need to replace the EEPROM or the main board.
  • K
    karenlongSep 12, 2025
    What to do if humidity bar always of red or blue colour (or switched off) in Electrolux Oven?
    • M
      Miguel ScottSep 12, 2025
      If the humidity bar in your Electrolux Oven is always red or blue, or switched off, check if the lambda probe is fed with 9.5 Vdc from the relevant switching feeder. If 9.5 Vdc are not present, check if the switching feeder is supplied with 230 Vac from the main board. Also, check the fuse on the switching feeder, the connection of the probe on the main board, and the connections on the lambda probe. Consider changing the lambda probe. If the humidity bar is switched off, verify if parameter LAMb is set to 1.

Summary

TROUBLESHOOTING

PARAMETER DESCRIPTIONS

GAS CALIBRATIONS

Programming the Default Parameters

Advanced Programming

By-Pass Calibration

Lambda Probe Calibration

Offset Calibration

Error Codes

Errors

Lists error codes that stop appliance operation and their meanings.

Service Utilities

Cycles, Utilities, and Important Parameters

Gas System

Offset Pressure Calibration

Step-by-step guide for calibrating the offset pressure of gas valves.

Microprocessor Board Replacement

Troubleshooting Guide (Appendix D)

Appendix F: Parameter Descriptions List

Appendix G: Gas Calibration Tables

Electrolux AOS202E Series Specifications

General IconGeneral
BrandElectrolux
ModelAOS202E Series
CategoryOven
LanguageEnglish

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