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Ariston aqxxf 149 washing machine indicates F02 fault code

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altin
altin picture

Hi
I have ariston washing machine aqxxf 149
display indicates f02 but motor and tacho meter are correct.I can't reset it.please tell me how I can reset it.and please upload aqxxf 149 eepron dump file

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zsugori
zsugori picture
****

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altin
altin picture

how i can test LM 339 and MC33274
regards

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Jaca
Jaca picture
*****

Hi!

LM339 is comparator. If inverting input is higher then the non inverting input, the output is low. If the non inverting input is higher, the output is high.
MC33274 is an operation amplifier. The inverting an non inverting input must be equal, if there is feedback, or its work, like comparator.
But it is very cheap parts, easíer to replace.

Üdv: Jácint

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altin
altin picture

Hi
thank you.please tell me how to test lm 339 and MC33274 with multimeter.

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Jaca
Jaca picture
*****

Hi!

With multimeter, check all pin short to VDD and VSS (or VCC and VEE)

All must open! But easier way to change.

Üdv: Jácint

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altin
altin picture

Hi
do you know how i can reset ariston aqualtis aqxxf 149.main board was replaced but display show f02.display board didnt replase.how i can to reset it please.motor and tacho are correct.

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altin
altin picture

very very thank you

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altin
altin picture

thank you.excuse me how i can to reset it

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Jaca
Jaca picture
*****

Hi!

First, please add symptom to title! (eg. ariston aqxxf 149 error code F02 ) Thanks!

Jácint

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altin
altin picture

excuse me.

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