03-2009 SOI/DT-mdm FCPD-dp Quality-fz 5/91 599 70 56-70
INTRODUCTION
1.1 Purpose of this manual
The purpose of this Service Manual is to provide a simple and clear description of the
procedure to be followed by service engineers when confronted by problems identified by
the various alarm codes generated by appliances with the EWM2100 electronic control
system.
Depending on the configuration of the appliance, the alarm codes may be displayed
partially or completely to the user (the alarm codes are generally displayed partially).
The diagnostic system can be used by service engineers for the following purposes:
♦ To read the alarms
♦ To cancel alarm conditions stored in memory
♦ To test the operation of the appliance
1.2 Procedure
1. Identify the type of control system (page 6/7) and access the diagnostic cycle
(See page 8).
2. Read the alarm code stored in memory (page 12) and refer to the instructions for the
corresponding alarm code, page 15-19.
3. Cancel the alarm stored in memory (page 14).
4. If access to the diagnostic cycle is not possible, refer to the section “Access to
diagnostic system impossible” (page 20).
5. If the main PCB is replaced, check that there are no burned parts (see page 91).
6. After any repair, always check the operation of the appliance using the diagnostic cycle
(page 9).
7. Cancel any alarms stored in memory during the diagnostic procedure (page 14).
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