Ariston avtf 104 DIY repair

Details: ariston avtf 104 do-it-yourself repair from a real master for the site my.housecope.com.

Message kaidal » Mar 31, 2010 13:53

Message Artemon » Mar 31, 2010 14:04

Message kosarev_ol » Mar 31, 2010 14:11

Message Gramozeka » 31 Mar 2010 14:38

Message kosarev_ol » Mar 31, 2010 18:07

AND HERE ARE THE SAME 50/50 THAT IT IS POSSIBLE / NOT POSSIBLE TO REPAIR. WHAT DO YOU SAY, MASTER? THE PHOTO CANNOT BE POSTED. EITHER PDF DOES NOT ACCEPT, THEN THE FILE IS TOO LARGE. I will try to describe: on the LT-C126 board with a barcode tag C91380145603260 burned out: Varistor RV3 (431K), choke L1, evaporates the transistor Q9 near the varistor RV4, burned out the piston connection of the printed circuit board between jumpers E2 and E7 (ador , AND FROM THE INSTALLATION SIDE, LIKE TERMINAL 3 OF CONNECTOR J4.
WHAT DO YOU ADVISE? PHOTO CAN SEND BY E-MAIL.

Message bun » Mar 31, 2010 18:50

Message kosarev_ol » Mar 31, 2010 19:06

Ariston washing machines from an Italian manufacturer can be called a "model of reliability and quality", but they sometimes require attention. Repair of Ariston washing machines in some cases can be done by hand, and a specialist needs to be involved only in the most difficult cases.

In this article, we will analyze the frequent malfunctions of Hotpoint Ariston automatic washing machines, study the “symptoms” of such breakdowns and decide how to properly repair it yourself.

The vast majority of breakdowns of Ariston washing machines are related to their operation. This is recognized by the masters of service centers for the repair of washing machines. Sometimes we are talking about frankly improper operation, the user regularly makes gross mistakes, which lead to a breakdown. But most often, the cause of the breakdown is the operating conditions, which the user either did not know about, or guessed, but did nothing. A vivid example is hard water, which can completely disable the “home helper”!

Video (click to play).

So, what breakdowns are most often found on Hotpoint Ariston washing machines? We decided to compile a kind of rating of the frequency of breakdowns. When compiling the rating, we rely on statistical data provided by the leading service centers for the repair of washing machines.

blockages. Blockages themselves can hardly be considered breakdowns; rather, they are the cause of various breakdowns. However, it is blockages that craftsmen have to deal with most often, and it is strong blockages that most often paralyze the operation of various Hotpoint Ariston washing machines.
A heating element. In second place in our ranking is ten. Despite the fact that the heating element itself is of high quality, low-quality hard water does its job. Over time, the scale layer destroys even the best part and it has to be changed.
Water pump. In third place is the drain pump or pump. This part fails quite rarely and in most cases the reason is wear and tear from long-term operation.
Fill valve. Even more rarely, the filling valve fails. More precisely, not even the valve itself, but a rubber gasket. Rubber becomes dull over time and begins to let water through, this causes a malfunction. The gasket itself costs a penny, but the services of a master in replacing this gasket cannot be called cheap.
Bearings and seals. In fifth place are the breakdowns of bearings and seals. On Hotpoint Ariston washing machines, this is a rarity, but if such a breakdown occurs, you cannot continue to operate the machine.

Important! The electrics and electronics of the Hotpoint Ariston washing machine are intentionally not included in the rating, since it breaks very rarely.

If you have problems with blockages on the Hotpoint Ariston washing machine, do not rush to call the master, everything can be repaired quickly, with your own hands. How do you know that you are dealing with a blockage? The main sign of a blockage in the drain system is the idle operation of the drain pump, that is, it is buzzing, but the water does not leave the tank. Usually, this trouble appears after the end of washing, the machine cannot drain the waste water to start rinsing and freezes, or it drains the water too slowly.

Strong blockage can be in several places:

in the drain pipe, between the tank and the drain filter - this happens less often, since the pipe is quite thick;
in the drain filter - there the blockage forms most often;
in the pump - in Ariston washing machines, blockages in the pump are rare, since an additional filter is installed in front of the drain pump;
in the drain hose - blockages rarely occur, mainly in cases where the hose was not installed correctly.

How to quickly clear blockages? First of all, you need to check and clean the easily accessible places of the washing machine where a blockage could occur. First, unscrew the drain filter, which is located on the Ariston machines at the bottom right under the narrow panel. Before unscrewing the filter, put a cloth over it, as water will flow from it. Remove all debris from the filter, and then screw it back on.

Next, it is important to check the drain hose and sewer. In some situations, a banal blockage in the drain pipe can force the user to turn to machine repair specialists when it would be more correct to turn to plumbers. And if everything is in perfect order, then it will be necessary to disassemble the machine, clean the nozzles and the pump. To remove the pipe, you will need to loosen two clamps, and to remove the pump, you will need to disconnect it from the sensors and unscrew the two fasteners.

If any malfunction occurs, the Hotpoint Ariston “washer” gives an error with a certain code displayed on the screen. It is very important to correctly recognize the error codes of Ariston washing machines, because this is a direct clue indicating the cause of the breakdown.

A broken inlet valve “according to symptoms” is quite difficult to confuse with other breakdowns of the Hotpoint Ariston washing machine. When the inlet valve stops shutting off the water, water begins to flow into the washing machine tank by gravity, even if the “home assistant” is turned off from the network.

If you hear the characteristic murmur of water being filled in and drained from the tank when the machine is turned off, be sure this is a valve.

To check the filling valve, you need to remove the top cover of the Hotpoint Ariston machine by unscrewing the two fasteners. The valve is located at the junction of the inlet hose with the body of the machine. First of all, we check the gaskets, if they are intact, then you need to measure the resistance of the device, and for this you will have to use a multimeter. We install the probes on the contacts of the filling valve and check. The device should show approximately 30 to 50 ohms.

A defective filling valve should be replaced with a similar one; self-repair is not possible. The replacement itself is done very quickly, we unscrew the old valve from the body and screw in the new one, not forgetting to connect the sensors. It is worse if the pump fails, because this is a rather expensive part.

A faulty pump gives itself out during washing, when the machine should drain the water, but it does not, while the pump either does not make any sounds at all, or it buzzes, but the murmur of the drained water is not audible.

Note! Strictly speaking, these symptoms are superficial and may be indicative of other problems (eg electronics), but it should make you think to check the pump first.

In the Hotpoint Ariston washing machine, it is located at the bottom and you can get to it through the bottom. It is better to check and replace the drain pump by a specialist, but you can do everything yourself, the main thing is to thoroughly study the progress of work.

The heating element is an important part of the washing machine, responsible for the temperature of the water in the tank, and therefore for the quality of the wash. If the heating element is faulty, the wash either does not start at all, and the system gives an error, or the wash is performed in cold water. Both should prompt you to check and replace the heating element in the Hotpoint Ariston washing machine.

Checking the heating element of the Ariston washing machine is not difficult at all. It is necessary to deploy the machine, in the lower part of the rear wall there is a service hatch, which is attached to the clamps and several self-tapping screws.We unscrew the screws, and squeeze the latches with a screwdriver, after which the cover will be removed. Behind the lid, under the tank, you will see two large contacts with a fastener in the middle - this is the heating element. We unscrew the screw, and then we begin to pull the heating element towards ourselves, pulling it out with shaking movements.

Note! Before pulling out the heating element, it’s a good idea to measure the resistance with a multimeter, perhaps the device is working, and you don’t need to touch it.

As we have already noted, failures of bearings and seals are the most rare malfunctions of Ariston washing machines. However, if this happens, urgent action must be taken. Recognizing such a breakdown is not difficult. When the bearing is destroyed, the moving elements begin to make unpleasant sounds, the shaft begins to rub against the bushing, which leads to wear. And if you do not take any measures and continue to wash, then this can lead to the fact that the drum will begin to play and damage the tank.

So that your favorite washing machine does not end up in a landfill, you need to contact a specialist when such sounds appear, or try to change the bearings yourself. If you are determined to do the work yourself, study the information offered on our website. Otherwise, with such a complex repair, it is not surprising to make serious mistakes. The main difficulty is that in order to get to the bearings, you need to disassemble the entire washing machine, along with the tank.

In addition, it will be necessary to correctly remove the old bearings without damaging the sleeve, and then correctly install the new ones so that re-repair is not required. Without proper skill, self-repair is not possible for many, so before taking on work, consider delegating it to a specialist.

In conclusion, we note that it is theoretically possible to repair malfunctions of Ariston machines with your own hands, especially if you have the time and patience. But still, in order to avoid mistakes and unnecessary expenses, it is better to contact a specialist because "the miser pays twice"!

Models of Hotpoint and Margarita washing machines from the Italian manufacturer Ariston are rightfully considered one of the most reliable, ergonomic and high-quality among numerous competitors. However, even with them, sometimes unforeseen failures occur, which can be completely eliminated with your own hands.

Before you start repairing the machine, you should first figure out what most often malfunctions lead to the failure of the unit and determine the code of possible malfunctions.

The stability of the Ariston machines, first of all, depends on their correct operation. If there are certain problems, then you can try to fix them on your own, without resorting to the help of a specialist. But for this you need to figure out what most often can cause malfunctions.

Perhaps one of the most common causes of problems in the operation of the machine is blockages that prevent the passage of water during the process of draining it, which, in turn, leads to the inability of the washer to reconfigure the rinse mode. Characteristic signs of this problem are idling, loud noise and the impossibility of passing water through the hose (or very poor water permeability). As for places of blockage, then they can be concentrated:

in the drain hose itself, and in most cases blockages occur if it is installed incorrectly;
often blockages form in the drain filter itself;
blockages may occur in the pipe, which is located between the drain filter and the tank;
and also in the pump, although this is an extremely rare practice.

In order to correct the situation and eliminate the malfunction, it is enough to clean the machine from blockages in accessible places (pump, hose, drain pump or pipe).

The second problem that can be encountered during the operation of Ariston machines is lack of water heating during the erasing process. Often, in such a situation, the washing machine can be shocked due to dysfunction of the insulation of the heating element.

The main reason that provokes such a malfunction is extremely hard water, resulting in the formation of scale. Repair consists in replacing a damaged electric heater (heater). To do this, unscrew the back panel of the machine, since it is behind it that the fastener of the broken electric heater is located. First, disconnect all contacts and unscrew the fixing screw, then carefully pull out the broken heater and replace the part with a new one. Everything, the malfunction is fixed, and the machine should heat the water, as before.

The most difficult problem is the breakdown or partial wear of the bearing or seal at Ariston. Fortunately, in practice, it is extremely rare.

To understand that machine malfunctions are result of bearing failurejust pay attention to the following signs:

during the operation of the unit, all moving elements of the washer begin to make characteristic sounds during the spin cycle;
in this case, the shaft begins to come into contact with the sleeve;
vibrations are possible.

It must be said right away that this problem should be removed promptly, because otherwise you can just break the machine. The only difficulty is that the repair will require almost complete disassembly of the machine. Therefore, if there is no confidence in your actions, it is best to entrust this process to a professional.

In this case, most likely there is a malfunction associated with socket or power cord. To check the operation of the outlet, just try turning on another electrical appliance. If everything is in order with the outlet, then you need to check the wire itself. To do this, it must be disconnected from the outlet and try to “ring” with a special tester.

In the event that the electrical wire is normal, then most likely the problem is hidden directly in the power supply of the machine. This is a rather complex problem, so only an experienced professional can solve it.

It is interesting! How to open the washing machine yourself if it is blocked

Another problem that can cause the machine to stop working is no drum rotation. There are several reasons that can cause such a situation: engine breakdown; problems with electrical wiring; collection in the operation of the control panel or clogging of the filter. However, the most common cause is wear or severe stretching of the belt. In this case, you need to replace it - there should not be any special problems with self-replacement.

If the reason is different, then it is best to call a professional at home to identify the cause of the breakdown of the machine.

An equally common problem that users of Ariston Hotpoint or Margarita typewriters may encounter is a malfunction that occurs directly in the control unit. The main reason for this problem is a malfunction of our electrical networks, which is extremely problematic to deal with on our own.

In this case, the problem is easier to prevent than to fix. Therefore, before you start operating the washing machine, in particular, Ariston, it is best to put special protective equipment, which help protect the washer from power surges and other similar failures. This approach will be much more efficient and economical than replacing the entire control unit.

Operational problems may also arise during loose or broken mechanical fastenerswith which the machine is equipped. Most often, this is expressed in weakening the fixation of the hatch of the machine. The problem has the following symptoms: strong noise during the operation of the washer and characteristic vibrations. To get rid of this, it is enough to tighten or completely replace the fasteners with new ones.

It should be noted that such models of Ariston washing machines as Margarita 2000, Hotpoint, Avsl 109 and others have unique self-diagnosis function. The bottom line is that the system independently detects a malfunction and shows on the display or by flashing indicators, its specific code. Having an idea of what code number the unit shows, you can independently identify the problem and fix it.

It is interesting! Reasons why the washing machine does not draw water

Having an idea of \u200b\u200bwhat most often failures can occur in Ariston typewriters, you can try independently repair the unit. However, it should be started only if there is confidence in their actions. If there is no experience in such things, it is best to entrust the repair of the washer to a specialist.

Ariston specialists supply their equipment with advanced technologies, trying to make it strong and durable. However, like all electrical appliances, cars are prone to breakdowns. Most of the malfunctions that occur with the Ariston washing machine are of a typical nature and their elimination involves the replacement of a certain part.Most of the malfunctions in washing machines occur due to its improper operation. Often people do not pay attention or do not know about some of the nuances associated with the operation of automatic machines. Many do not realize that hard water can lead to damage to the heating element (heating element).Let's figure out what kind of breakdowns the Ariston washing machine is prone to and consider ways to eliminate them without the participation of service centers using the Hotpoint Ariston 2000 Margarita model as an example. Image - Ariston avtf 104 DIY repair

TEN (heating element). The reason for its breakdown is hard water and washing at high temperatures. As a result, scale appears on the part over time, which disables it.
The drain pump or pump fails quite rarely, the reason for this is the long-term operation of the equipment.
Filler valve gasket. Over time, the rubber gasket becomes rigid, as a result of which it begins to let water through. Replacing it is an expensive pleasure, although it itself costs very little.
Oil seals and bearings in Hotpoint Ariston washing machines break quite rarely, but if this happens, it is absolutely impossible to use the equipment.
blockage. It is not entirely correct to consider blockage as a malfunction, although it can also cause serious damage.

The heating element is responsible for the temperature of the water in the drum at the time of washing. It is thanks to him that our things are washed in water at the degree we need. In the event of a failure of the heating element or wiring, Margarita 2000 will determine this and notify the owner by flashing the on / off indicator. in the amount of three flashes, which corresponds to mistake f03. Outwardly, the problem will manifest itself either as a completely idle machine, or by washing clothes in cold water.

The elimination of such a malfunction consists in determining its localization.

If there is a break in the electrical circuit, it should be removed, and if the heating element burned out, it should be replaced.

In the event of a breakdown in the water inlet valve, the washing machine will not be able to regulate the process of water supply. It will begin to flood even when the equipment is not connected to the mains. To verify this, it is necessary to remove the top cover from the unit and check the place where the inlet hose is attached to the body (valve location) of the gasket. If there are no problems with them, then attention should be switched to the detail itself, checking the resistance. This will require a multimeter, which, in case of serviceability, will give a value from 30 to 50 ohms.

Replacing the filling valve on your own is not possible, you must contact the service center.

If at the moment when the water should be drained, this does not happen, but only a characteristic hum is heard, and in some cases complete silence, we can conclude that the pump is malfunctioning. This part is located at the bottom of the car, and it can only be reached through the bottom. It is better to entrust its replacement to a specialist.

Failure of bearings and seals is a fairly rare occurrence.This can be suspected in the event of unpleasant sounds that are emitted by the moving elements of a destroyed bearing. This breakdown requires immediate response. If you continue to turn a blind eye to this, the drum will have play, as a result of which it will begin to touch the tank. To avoid irreparable consequences, you need to seek help from specialists.

If you want to fix the problem on your own, it is worth considering that in order to replace the bearings, you will need to completely disassemble the washing machine.

In addition, when installing a new part, it is important not to damage the bushing, otherwise additional repairs will be necessary. Therefore, before proceeding with the elimination of this breakdown, sensibly evaluate your strengths.

If a blockage is found in the Ariston washing machine, do not rush to call the wizard, since almost any user can eliminate it.

A characteristic feature of blockage is the inability of the equipment to drain the water at the end of the wash, despite the presence of a characteristic hum. Or it happens very slowly.

Most often, blockage can be found in such elements of the machine as:

drain hose;
drain filter (most common place);
water pump;
pipe between the tank and the drain filter.

To eliminate the blockage, first of all, you need to check the most accessible places. First, open the narrow hatch on the front of the machine on the right side from the bottom and unscrew the drain filter. Don't forget to put something absorbent under it, water will surely flow out of the hole. After cleaning the filter and making sure that there is no more dirt on it, you can screw it into place. Then it is best to check drain hose and sewer. But if no blockage is found here either, then you will need to disassemble the unit and clean the nozzles with a pump.

Hotpoint Ariston washing machines are equipped with electronic display, which provides all kinds of information about the progress of the equipment. In addition, on this board, certain error codes are displayed that report the causes of the malfunction. This makes troubleshooting much easier.

To figure out what these or those error codes mean, the malfunction instruction that comes with all Ariston washing machines will help:

Not all Ariston washing machines are equipped with an electronic display. If a malfunction occurs in the operation of equipment that does not have a display (for example, in the Ariston Margarita 2000 washing machine), the unit will notify us of the malfunction by means of a flashing on / off indicator.In order to determine what caused the problem, you need to calculate how many times the light bulb will light up with a frequency of 1 second.Manufacturers of Ariston washing machines took care of the owners of the equipment, providing it not only with advanced features and modern design, but also with a self-diagnosis system. Error codes indicating malfunctions are displayed on the electronic scoreboard of the equipment. The problem can also manifest itself with the help of indicator light on the front panel, as, for example, on the Ariston Margarita 2000 washing machine.Undoubtedly, washing equipment has a complex structure, but in most cases, knowing about errors and malfunctions, you can easily find their cause and eliminate it on your own, without resorting to the help of specialists.

And my opinion. What are we arguing about? Let him call a specialist, otherwise he will make repairs to his neighbor.

. thanks for the promptness (didn't expect). comments on the thread above:

nicotine: if they gnawed through the tube, then due to what does the 30-minute mode work?
baksi: it won’t work for an hour - after half an hour (approximately) it will get up with an H2O error (there will be no water under it, because the program stops the water supply after a certain time (2 minutes, maybe) if the level sensor did not say that there was enough water) .

can it be (from the realm of fantasy already) that the level sensor “wedges” after a certain operating time?

Remove the self-draining and do not fool your head.

How is that? The drain was pulled out of the sewer and put into the sink, height 85 (there was a thought about the suction, but it was refuted).

Tormoz_Blinwhat problems call a specialist?

Tormoz_Blin, Look carefully at the tube, they are very small holes, 30 minutes is not an indicator, but better call the master, otherwise you will finish playing to a new machine.

we don't have specialists. 1 service center is inadequate (1 time personally contacted - they cannot distinguish factory soldering from handicraft, only put a kilogram of nerves and that's it)!

I didn’t call from the service center - I came and looked and said everything was fine (for some reason everything worked with him - BUT he didn’t turn it on for a long time)!

If anyone knows a person with hands and a head (growing from their proper places), then the question will not arise for money.

Krasnoyarsk Territory, Achinsk

see master: I'll try to take it off and blow it under water. I will unsubscribe in the evening

a year in the garage, rubber aging is possible. microcracks. and yet - “I pressed the reset - I began to pour water again! I live on the 4th floor, but we don’t complain about the water pressure. As a result, I left for 5 minutes, and when I returned, my legs plunged into the water! ” or ” and always ends at 1 hour 12 minutes.” . Does it always leak or occasionally?

Still, a master is simply necessary. !
Tormoz_Blin, (well, I picked up a nickname) if you indicated your place of residence in your profile, you could be advised by the SC or the master will respond. .

FAU2: drowned only 1 time. When she cursed at the H2O error, I didn’t look at how much water was in the drum (there were no problems before, after this incident I check everything for all the faults), but I just pressed the start button so that she continued. and it didn't get to the next error.

SergeyNZ: above the place of residence is written

There is 1 delusional thought on how to check the level sensor (without it - that is, check the boards), but for now I will stop work (although I removed the sensor itself and poked it with the device - it closes, opens everything perfectly). It's just that the wife gave birth to a girl and now at least a week before that.

Maybe he turns on the “ANTISHOCK” function before draining the temperature above 60%, This model has it

2.8.1. Antishock
If the machine IS SUITABLE for the draining phase (e.g. SPIN) and the WATER temperature
above the allowed limit (e.g. 600), the machine performs a
special loop, for example:
1. Filling 5 l from the washing solenoid valve.
2. Rotation of the drum at a speed of 25 rpm (5 s - on, 5 s - off) - 4 min.
3. If the temperature is above the limit, go to step 1, otherwise -
to item 4.
4. Drain + Spin.
2.8.2. Anti-foaming
If there is too much foam in the machine during the first rinse (detected
pressure switch), the machine performs the second cycle:
1. Stop for 2 min.
2. Filling 10 l from the washing solenoid valve.
3. Rotation of the drum at a speed of 25 rpm (5 s - ON, 5 s - off) - 2 min.
4. Performing the spin operation from the beginning.
The whole cycle is repeated until the excess foaming stops.
hustle.

I think they will forgive me with help?

baksi, what Antishock. It has water overflowing from the top! Here: the pressure switch tube, the pressure switch itself or its circuits. It will definitely not cope on its own, if only it throws in a new pressure switch, and then the module if it does not help.

Read carefully, I will add a drain should it be like in the manual? the pressure switch is ok

FAU2: drowned only 1 time. When she cursed at the H2O error, I didn’t look at how much water was in the drum (there were no problems before, after this incident I check everything for all the mistakes), but I just pressed the start button so that she continued. and it didn't get to the next error.

Read carefully, I will add a drain should it be like in the manual? the pressure switch is ok

This pressure switch has only 2 levels. Let the drain do it

baksiWho are you with and what are you talking about? After writing, re-read what you write, otherwise no one will understand your nonsense.

Well ka baksi, than you do not like the drain?

This pressure switch has only 2 positions 1 - full and 2 - overflow. The H2O error is 1 - no, it would be displayed after 6 minutes. The 30-minute wash mode goes off with a bang. But at a time of 1 hour 12 minutes without draining the water, wringing or something like that, it opens the water supply and pours it until H2O lights up on the indicator, then is this a CMA glitch?

this is a glitch of the water supply valve, at first it didn’t apply, now it skips

All the same, the fault of the pressure switch is inside the contacts or in connection with the module. Is there a command 2-overflow from it? Before draining, the SMA starts to draw water, and there is no 2-overflow command for more than 6 minutes, that's the H2O error.

At least think before you write any nonsense.

6 minutes is up to “tank full”. Maybe it’s better to call the master than to drown the neighbors and guess on the “powder thick”?

Hope dies last, maybe nonsense, let him think for himself how to act.
How do I check the chains I give him.

Tormoz_Blin, now I see the whole profile.

Before the New Year, I had a similar case with the EVO1 module: you turn on any washing program and the bay does not stop (I had to change the module - I have not seen such a glitch from the processor yet)
baksidon't skimp on the drawings

You don't have to post it here. Especially if the photo is someone else's. grifat

Yes, guess the topic three times, my head already hurts, I can lay out the whole machine by cogs. Only this will help him hardly.

The author has already disappeared, and you post all the drawings.

Oh well. has not disappeared yet, I wrote the reason for which I rolled off for a while.

baksi: thank you so much for the archive!

The pressure switch checked with a device - it really has 3 positions, and it works like a clock.
It was not possible to remove the tube, laziness took over (it is necessary to disassemble the back wall, and as a result, the entire unit) - he blew right like that (plugging 1 side with his finger), almost tore from pressure. Kill do not believe that 2 mm. walls can be killed.

. Let's go straight to the experiments. The door is locked according to the standard scheme. How to “tell” a piece of iron that the door is closed and the lock is active? 1 and 2 close? I ask because on 2 and 3 -

220V with the lock module disabled.

With the door, the issue must be resolved in order to control the water visually.

The essence of the experiment: to find the last one - a pressure switch or a controller (I will check the handset with 2 experiments, although it could have been the first, but I don’t believe in it).

.
. turn off the water level sensor (separately from grease). So that the place is not empty, we set the switch to 3 positions (the book Frenzied Handles Volume 3, Chapter 19).
. a small digression (in our case, a very important one) - we take beer with crayfish, roach, pistachios, etc. gentlemen's set.
. took the belt off the drum.
. incl. to the maximum mode (in time).

ZY: how much does the fee for the subject cost and is it really possible to find it (which manages. Or is it necessary to change both at once. As I understand it, under the indicators, the display board only)?

Video (click to play).

You haven't checked your press yet. You pick up the tube, start the machine, put a syringe into the tube and blow with it, and not with your “mouth”, until the press is triggered. if the bay is terminated, the module is alive. Throw the syringe in that position and wait. If the bay works (the press releases), look for the place where it was rubbed.

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