AEG EDW1103, Service Manual, Page: 32 / 59

SOE/PR 32 599 72 48-93
“i57“ – code: mcb Vbat voltage plausability
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alarm will be set if Vbat is detected higher than 440V or lower than 215V.
rem.: with Vbat voltage the calculation of the motor resistance is executed
“i58“ – code: motor plug connection
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alarm will be set if motor connection is detected wrong based on motor currents measurements.
if currents are inside the thresholds (+/- 10mA); debounce is set to 2 seconds
“i59“ – code: mcb current read adc - fault
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alarm is set if there is detected a fault in the current reading chain on mcb; incl. adc conversion
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it´s verified by the current sum of the three motor phases which should be nearly zero; if the sum
is higher than 40mA for longer than 300 ms than the assumption is that something is wrong.
“i5A“ – code: over temperature motor windings
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internal warning is set when the internal calculations based on the measured currents lets expect that
the temperature are out of standard limits (200°C – with 40°C margin due to measurement and
calculation tolerances).
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the threshold value for the warning is 200 – 70 (max. ambient temperature inside the dishwasher) - 10
(activation margin) = 120°C
warning level is given
•
if the warning is set, than the motor is stopped and a new winding resistance calculation is performed .
in this way the real temperature can be calculated – temp. calculation is based on ref. resistance of
motor windings at 22°C.
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the alarm is set if the value is greater than the threshold 178°C (200 – 22).
rem.: the alarm is reset by MCB after verification procedure with baseboard.
“i60” Code - family : Heating Element Problem
“i60” – code: heating
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The alarm is stored and displayed only in service mode; the washing programme continues without the
activation of the heating element.
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During the heating phases, the rise in temperature is monitored with an update every 3 min.
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Within these 3 minutes, the temperature must rise by at least 1 °C.
“i61” – code: heating over temperature
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if water temperature is detected higher than 78°C, cycle is stopped.
(rem.: origin of this alarm is problem on visi plastic doors)
“i70” Code - family : Thermistor problem
“i70” – code: NTC sensor value out of range
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The alarm is stored and displayed only in service mode; the washing program continues without the
activation of the heating element.
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Monitoring starts immediately after the program has been started.
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The voltage measured at the ends of the NTC must be between 0.04 and 4.7 V.