Eeprom Error Function - Electrolux ERF2000 Service Manual

The display shows the software version which consists of the last six digits/letters in sequence alternated
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by a short signal of the buzzer. The last displayed digit is not followed by a short signal.
- The display switches off and the buzzer sounds with a long signal for the third time.
The display shows the letter E followed by a short signal of the buzzer and then a digit (failure code)
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- The display switches off and the buzzer sounds with a long signal for the fourth time.
The display returns to a normal condition.
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The failure codes currently activated are:
- E1: error in the evaporator NTC sensor;
- E2: error in the room temperature NTC sensor;
- E3: error in the evaporator NTC sensor and in the room temperature NTC sensor.
Example:
If the software code is NFBC0A01, the EEPROM code is C0002 and a failure of the room NTC sensor is
detected, with this procedure the following operations are carried out:
1) The display clears and the buzzer sounds with a long signal
2) The display shows 0 (EEPROM code)
3) The buzzer sounds with a short signal
4) The display shows 0 (second digit EEPROM code)
5) The buzzer sounds with a short signal
6) The display shows 0 (third digit EEPROM code)
7) The buzzer sounds with a short signal
8) The display shows 2 (fourth digit EEPROM code)
9) The display clears and the buzzer sounds with a long signal
10) The display shows b (software code)
11) The buzzer sounds with a short signal
12) The display shows C (software code)
13) The buzzer sounds with a short signal
14) The display shows 0 (software code)
15) The buzzer sounds with a short signal
16) The display shows A (software code)
17) The buzzer sounds with a short signal
18) The display shows 0 (software code)
19) The buzzer sounds with a short signal
20) The display shows 1 (software code)
21) The buzzer clears and the buzzer sounds with a long signal
22) The display shows E (software code)
23) The buzzer sounds with a short signal
24) The display shows 2 (software code)
25) The display clears and the buzzer sounds with a long signal
26) The display returns to a normal condition
If the system detects a reading or writing error of the EEPROM parameters, the system activates the following
procedure:
The default EEPROM parameters are loaded
The letter P is displayed
It deactivates the open door alarm
It is possible to check if an error has occurred in the EEPROM memory and to activate this test function it is
necessary to push Super button within 1 min after the switching on (the Super button must be switched off).
If an EEPROM error occurs the buzzer sounds with a long signal (5 seconds).
ERF2000 Functions of the electronic boards Rev. 01

7.4 EEPROM Error function

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