Error 4C on Samsung dishwasher

Usually, for each specific malfunction, manufacturers of household appliances prepare a separate code to make it easier to understand the problem. However, on Samsung equipment, error 4C usually reports the same problem to the user as errors 4E and E1. If the “home assistant” does not have a display to display information, then the equipment will indicate an emergency situation by flashing indicators opposite the “Quick wash” and “Economic wash” signs. The error appears when there is no water in the dishwasher, which is why it cannot work. We will analyze in detail the situation with the lack of fluid and tell you how to fix it yourself without calling a specialist.

Water is not supplied to the PMM

This may seem trivial, but very often the reason for the lack of water supply to the Samsung dishwasher is problems with the plumbing. Therefore, do not rush to call a repairman if the mentioned error code appears on your display until you check the presence of water in the house.

In addition to the water pressure that is necessary for the PMM, it is worth checking the tee valve, which is necessary to shut off the liquid supply to household appliances. The faucet shut-off lever very often breaks off on the inside, causing the device to be broken, but it appears to be in perfect working order. In this case, turns in any direction will not change anything, so the mechanism will remain blocked. In this situation, it is logical that first of all suspicions will fall on the Samsung dishwasher, and not on the tee tap, which looks and feels completely intact.

If the problem is not in the water supply and the tee tap, then you need to move on to more complex testing stages.Most of the reasons can be easily dealt with at home, even without special experience, so you should not be afraid of repairs.

Which part does not allow water to pass through?

When error 4C lights up on the display of a Samsung dishwasher, but there is water in the house, the tee tap is working, and all the rules for operating the “home assistant” have been followed, it is worth starting a gradual check of the key components of the equipment, starting with the most basic causes of the problem. Experts note the following circumstances due to which this error code may appear.

• The flow filter or the entire PMM system is clogged.
• The fill valve was broken, blocking the fluid supply.
• The washing chamber door is faulty, so the user cannot seal the household appliances tightly.
• The water level sensor is broken.
• The “Aqua Safe” protective mechanism has activated.
• The control module of the Samsung dishwasher is damaged.

There are not many options, so you can methodically check all the points to identify the problem and reset the 4C error.

Aqua Safe

First of all, you should start with a hose equipped with the Aqua Safe anti-leak protection system. The mechanism looks like a small valve that can prevent flooding in a situation where there is a leak in the hose. If this really happened, then you should not try to patch the sleeve, because it needs to be replaced with a whole one. It is easy to determine that the problem is in the hose. If it is blocked, the hose indicator at the water supply connection area will light up red. What should I do to replace the element?

• Disconnect your Samsung dishwasher from all communications.
• Remove the leaking hose.

Before repairing, be sure to cover the floors with rags or unnecessary towels so that water from the hose does not flood the floors.

• Place the new hose in place and carefully tighten it, without using an adjustable wrench or other special tools, as this may damage the fragile plastic nuts.

After all the manipulations, all that remains is to connect the equipment back to water and light to check it during the test operating cycle. Carefully monitor the hose with the Aqua Safe system so that all nuts are securely fastened and there are no leaks.

Finding and eliminating the blockage of the flow filter

If the previous point did not help fix the problem, then the problem may have arisen due to poor-quality tap water. Mostly in Russia, hard tap water with various impurities is common, which is why the Samsung dishwasher filter can become clogged very quickly. If this happens, the liquid will either be collected very slowly or will not be collected at all.

Finding the flow filter itself is very simple - it looks like a small mesh that helps trap abrasive particles and various contaminants. If it were not for this filter, debris from the water supply would penetrate directly into the dishwasher, causing damage to its key components. What should I do to clean a clogged filter?

• Disconnect the PMM from the water supply.
• Remove the water supply hose.
• Locate the mesh that is installed where the hose connects to the dishwasher.
• Clean the mesh with a needle or pin, pulling out the smallest dirt from it.
• Additionally, rinse the garbage filter under running hot water.

If ingrained contaminants simply cannot be removed, then you need to soak the element in a solution of citric acid for at least 60 minutes.

When the part is clean, install it in its seat. Be sure to test your Samsung dishwasher to see if the problem is resolved or not.

The water intake valve is broken

If error 4C still does not disappear, it may be possible to eliminate it by replacing the water intake valve. If it fails, then there will simply be no liquid intake, since it will stop opening even after receiving a signal from the Samsung PMM control board. Damage to the valve is usually associated with operation in unfavorable conditions, for example, when sudden changes in voltage or changes in fluid pressure constantly occur.

If the part really fails, do not try to fix it. If you are confident in your abilities, then take the deformed element to the store as an example, buy a new valve, and then install it and check the operation of the machine. This is a rather complicated and lengthy procedure that requires partial disassembly of the “home assistant”, so if you are not confident in yourself, then it is better to call a repairman for a replacement.

No signal from the pressure switch

You can also try to eliminate the error code by replacing the pressure switch. The water level sensor may stop sending information about the current liquid level to the PMM control module, or transmit incorrect data. In this case, the control module will not be able to determine the optimal course of action and will simply stop the flow of water so as not to accidentally flood everything around the PMM. You can determine whether the pressotate is working normally during a test if you have a regular multimeter at home.

• Unplug your Samsung dishwasher.
• Place the equipment on its side.
• Remove the lid from the bottom of the dishwasher.
• Find the water level sensor - it looks like a plastic washer.
• Carefully remove the tube from the pressure switch.
• Carefully remove the element latches, remove the wires, and then the water level sensor itself.

It is better to take several photographs of the correct connection of the wires, so that later you will have an example at hand.

• Set the tester to ohmmeter mode, connect its probes to the contacts of the pressure switch and measure the resistance.

There is no point in trying to restore the damaged unit - only a complete replacement of the sensor will help eliminate the 4C error.

Control board

Finally, if the cause of the problem is hidden in the dishwasher control module, then there is little you can do with your own hands. The fact is that this board is considered the main part of the “home assistant”, a kind of “brain” of the entire system, so repairs are extremely difficult, especially without special knowledge and skills. If the module is broken, then all further operation of the Samsung dishwasher will be impossible. You can only try to check the part yourself to know for sure that it is the problem.

• Open the washing chamber door.
• Remove all fixing bolts on the door.
• Find the dishwasher control module.
• Examine it for damage - look for burnt wiring, as well as tracks.

If the problems are visible to the naked eye, then call a service center specialist, because until the module is restored, you will not be able to use the equipment. But even if visually everything is in order, this does not mean that the board is working properly, so you should call a technician not only for repairs, but also for diagnostics, since it is not always possible to find damage alone. Moreover, independent partial disassembly of the equipment and checking such a complex element can only make things worse, so this work should only be trusted to a repair service.

   

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