Cur­rent­ly, wash­ing units pur­chased in retail stores for house­hold appli­ances have a spe­cial­ized warn­ing sys­tem for errors that have occurred dur­ing oper­a­tion. They iden­ti­fy emerg­ing faults and show infor­ma­tion on the dis­play. Aris­ton wash­ing machine error codes. Which in turn pro­vides the user and the mas­ter with con­ve­nience in trou­bleshoot­ing and find­ing their method of elim­i­na­tion. This sys­tem pro­gram is pro­vid­ed in the prod­ucts of INDESIT COMPANY, before the renam­ing, this com­pa­ny had the name MERLONI Elettdo­mes­ti­ci. The most pop­u­lar mod­els of wash­ing machines from this com­pa­ny are named after Inde­sit and Aris­ton.

How to decipher errors in cars with the EVO-II system without a display

Ariston washing machine error codes

In low-cost devices man­u­fac­tured under the Inde­sit and Aris­ton brands, there is no dis­play as such. Already in such cas­es, on these mod­els, errors are dis­played by high­light­ing and dis­play­ing many com­bi­na­tions of LEDs, each val­ue dis­plays only 1 error. They are assigned data to a val­ue:

  • the timer is assigned the val­ue KH1;
  • super­wash is respon­si­ble for KH2;
  • quick wash indi­cates KH3;
  • an indi­ca­tor indi­cat­ing KH4 is attached to the quick wash but­ton;
  • the indi­ca­tor respon­si­ble for spin­ning the laun­dry indi­cates LED 4.

Due to the fact that some of them are lit and some are not, you will be able to fix the error that has occurred.

In the design of devices that have dis­plays, it is much eas­i­er to under­stand the error num­ber. They are dis­played on them in the form of a code con­sist­ing of Latin let­ters and num­bers.

See also - Aris­ton wash­ing machine — error code F08 (F08)

List of EVO-II errors and their interpretation

Dis­played only KH4 — this sym­bol­izes the occur­rence of an error num­ber F01. It is dis­played when there is a short cir­cuit in the wiring sys­tem in the sec­tion of the cir­cuit that leads to the engine con­trol of the wash­ing machine. First, before pro­ceed­ing with the repair, it is nec­es­sary to com­plete­ly check the device for the pres­ence of water on the con­tacts of the con­troller fields, which are con­nect­ed to the dri­ve motor of the machine using a har­ness. If, after car­ry­ing out this manip­u­la­tion, the error remains, it is nec­es­sary to check with a mul­ti­me­ter what exact­ly is out of order and replace it.

High­light­ed KN3which indi­cates an error F02, it tells you that there is no sig­nal about the rota­tion of the elec­tric motor on the com­mand device. In order to solve this prob­lem you need:

  • first of all, make sure that the rotor is not seiz­ing, which can be caused by seized bear­ings on the drum.
  • Make sure that the con­nec­tion of the com­mand device and the motor is cor­rect and intact.
  • Using a mul­ti­me­ter, mea­sure the wind­ing of the gen­er­a­tor; in work­ing con­di­tion, it should give out in the region from 115 to 170 ohms (read­ings vary due to the applic­a­ble dif­fer­ent con­trail­ers).
  • In case of mal­func­tions, replace defec­tive parts.

Dis­play on the dash­board KN3 and KN4 sig­nal­ing an error F03, name­ly that the heat­ing ele­ment has stuck, or the tem­per­a­ture sen­sor has failed. The first step is to make sure that the con­nec­tion between the sen­sor and the con­troller is intact. If, how­ev­er, the cor­rect con­nec­tion is nec­es­sary to mea­sure the resis­tance, it should be about 20 ohms.

When the dis­play only shows KH2then it indi­cates the pres­ence of an error F04, which in turn indi­cates the fail­ure of the water sen­sor. In order to elim­i­nate this mal­func­tion, the first step is to check the integri­ty of the wires going from the con­troller to the sen­sor, and also make sure that it is work­ing. In the event that the mal­func­tion could not be elim­i­nat­ed, then it is nec­es­sary to sequen­tial­ly replace the above parts.

List of EVO-II errors and their interpretation

Back­light KN2 and KN4 tells us about the error F05, which is asso­ci­at­ed with a mal­func­tion of the drain pump or water lev­el sen­sor. In order to fix this prob­lem you need to:

  • Make sure that the con­nec­tion and integri­ty of the wires com­ing from the pump to the con­troller are cor­rect;
  • Make sure that elec­tric­i­ty is sup­plied to the drain pump when it is sup­posed to be acti­vat­ed;
  • Hav­ing dis­con­nect­ed the wash­ing machine from the mains, apply 220 V to the pump, after which it will make sure that it is work­ing;
  • Check the health of the sen­sor respon­si­ble for deter­min­ing the water lev­el, and make sure that its con­nec­tion with the con­troller is intact;
  • It is nec­es­sary to make sure that there are block­ages in the fil­ter and the drain hose, if block­age is con­firmed, clean it.

Lit KN2 and KN3this means an error F06, which indi­cate a prob­lem with the but­tons. First of all, you need to make sure that there is con­tact between the dash­board and the com­mand device, and then make sure that the but­tons are work­ing. If the error has not dis­ap­peared, then a phased replace­ment of the dash­board and com­mand device is car­ried out.

Flash­ing KN2, KN3 and KN4 sig­nals an error F07, which reports that the heat­ing ele­ment of the machine (heater) does not heat the water. As in all the cas­es described above, make sure the integri­ty of the con­nec­tion of the above ele­ments, and then check whether the water is heat­ing up in the machine. If there are no faults with the wires, replace the heat­ing ele­ment.

When the dis­play shows KN1this indi­cates an error F08 — this is a stick­ing of the heat­ing ele­ment relay when start­ing up in the tank of the wash­ing machine, a mal­func­tion occurred in the oper­a­tion of the sen­sor respon­si­ble for deter­min­ing the water lev­el. It is nec­es­sary to check the ele­ment and the heat­ing relay in turn, if a mal­func­tion of one of the above parts has been detect­ed, it needs to be replaced.

KN1 and KN4 dis­play an error F09, which tells you about a device mem­o­ry fail­ure. In order to elim­i­nate this error, it is nec­es­sary to flash or replace the chip.

KN1 and KN3 respon­si­ble for dis­play­ing the error F10, name­ly the lack of con­tact with the water lev­el sen­sor. Before replac­ing a part, it is nec­es­sary to check the integri­ty of the elec­tri­cal wiring going to it. If the wiring and the sen­sor are OK, it is nec­es­sary to replace the con­troller.

Error F11 dis­played on the dash­board as illu­mi­nat­ed indi­ca­tors KN1, KN3 and KN4. The error is caused by a lack of pow­er in the pump, this could be caused by a bro­ken wire. Check­ing the pump for per­for­mance must be done with a mul­ti­me­ter. To do this, apply the probes to the pump and mon­i­tor the resis­tance on the device screen. The work­ing device should give a result in the region of 200 ohms, in case of dis­crep­an­cy with this val­ue, it will be nec­es­sary to replace the pump with a sim­i­lar new unit.

KN1 and KN2 indi­cate an error F12 indi­cates a prob­lem in the sig­nal path from the con­troller to the dis­play mod­ule. In the event of a break­down, as in all cas­es, we check the integri­ty of the wiring, and then we make a phased replace­ment.

KH1, KH2 and KH4 — F13 — this error marks a mal­func­tion in the con­trol cir­cuit that is respon­si­ble for the oper­a­tion of dry­ing clothes. The first step is to make sure that the con­nec­tion between the tem­per­a­ture sen­sor and the con­troller is cor­rect. If every­thing is in order with the con­tacts, it is nec­es­sary to check the integri­ty of the above ele­ments, and replace them if nec­es­sary.

KH1, KH2, KH3 and KH4 — F14 – lights up when the dry­ing process does not want to start. First of all, it is worth check­ing the con­nec­tions of the heat­ing ele­ment, which is respon­si­ble for the above process with the main con­troller of the machine. If nec­es­sary, replace one of the ele­ments of the sys­tem.

KN1, KN2, KN3 and KN4 — F15 — also indi­cates prob­lems with the process of dry­ing clothes. This error indi­cates a mal­func­tion of the heat­ing ele­ment, only a com­plete replace­ment of this ele­ment will help here.

All indi­ca­tors are off — F16 — an error indi­cates a mal­func­tion of the wash­ing drum. How­ev­er, such errors often occur with mod­els that have a ver­ti­cal load of laun­dry.

LED4 and KH4 — F17 — the error indi­cates a mal­func­tion with the drum door, there are two options for the devel­op­ment of events — the first option is that the lid may not be tight­ly closed. And the sec­ond option implies that the pow­er sup­ply to the door lock of the machine has been cut off. It is nec­es­sary to take the fol­low­ing mea­sures: first of all, check the integri­ty of the con­tact fields that con­nect the con­troller and the lock on the machine door, also check the cir­cuit for volt­age. Check the integri­ty of the microswitch of the sys­tem with the door closed. If nec­es­sary, replace the above ele­ments.

LED4 and KH3 — F18 — the error marks a mal­func­tion in the con­nec­tion of the proces­sor that con­trols the elec­tric motor of the machine with the con­troller. It is also nec­es­sary to check the integri­ty of the con­tact fields; in case of a mal­func­tion, replace these ele­ments.


In this arti­cle, we have explained the main Aris­ton wash­ing machine error codes, taught you how to iden­ti­fy them cor­rect­ly and instilled basic meth­ods for their elim­i­na­tion. How­ev­er, remem­ber that any repair must be approached with a cool head, if you are not con­fi­dent in your skills or abil­i­ties, we rec­om­mend that you turn to pro­fes­sion­als.

See also: