It can be very annoying if your Indesit dishwasher isn’t heating the water. It’s possible that the dishes turn out less clean, leaving you to wonder what went wrong. This problem is more frequent than you may imagine, and there could be a number of causes for it.
You can solve the issue more effectively if you are aware of the potential causes. Finding the problem’s source is the first step in solving it, whether it’s a broken heating element, a broken thermostat, or a control board problem.
This post will examine the most frequent causes of an Indesit dishwasher not heating water and provide helpful tips for resolving these problems. You can restore the proper operation of your dishwasher by taking the appropriate measures.
| Possible Cause | Solution |
| Faulty Heating Element | Replace the heating element |
| Thermostat Malfunction | Check and replace the thermostat if necessary |
| Control Board Issue | Inspect the control board and replace if faulty |
| Wiring Problems | Examine wiring for damage and repair or replace |
| Blocked Water Inlet | Clean or replace the water inlet valve |
There are a number of common problems that could be causing your Indesit dishwasher to not heat the water, including a broken thermostat, a malfunctioning control board, or a faulty heating element. You can diagnose the problem and determine whether you need professional assistance or not by being aware of these potential issues. This guide will take you step-by-step through the potential causes and fixes to restore your dishwasher’s optimal operation.
Why the liquid in the PMM does not heat up?
The dishwasher does not heat the water for three clear reasons. A malfunctioning heating element, a damaged control module, or a broken thermostat could be the source of the issue. These PMM units are specifically in charge of warming the liquid.
With the heating element, everything is clear. The purpose of the tubular element is to warm the liquid as it enters the washing chamber. The water stays cold even if the component burns out. A multimeter can be used to diagnose the heater at home.
Many users replace the heating element on their Indesit dishwashers as soon as they notice that the water isn’t heated, even though there could be other, more serious causes.
The system’s liquid temperature is determined by the thermostat. The sensor will send inaccurate data to the control module in the event of a failure. For instance, it alerts you when the water temperature reaches the desired level while it’s still cool. This causes the dishwasher to break down.
The control module keeps an eye on every operation. Consequently, a failure happens if the triac that powers the temperature sensor or the heating element burns out. Thankfully, Indesit dishwasher electronic unit issues are incredibly uncommon.
Apart from the apparent rationales, it is also possible to draw attention to less obvious ones that users might not immediately associate with thermoelements. But sometimes, the issue lies right there in them. We are discussing the following elements:
- errors made when connecting the dishwasher to utilities;
- clogged trash filter;
- user errors when selecting a washing program;
- failed pressure sensor.
You can "blame" the machine’s failure to heat water immediately after purchase on the fact that it is connected to utilities that flagrantly violate the manual. If the dishwasher is connected to the sewer improperly, this occurs. However, how is this related?
It is crucial to connect the dishwasher’s drain hose correctly. Two bends must be made: one at the dishwasher’s base, near the bottom, and the other right next to the siphon. This is required to stop the "siphon effect," which prevents the sewer drains from returning to the machine.
The water in the dishwasher won’t flow through it normally if the drain hose is connected improperly. This will, at the very least, result in a small temperature difference between the liquid in the working chamber and the temperature that the washing program specifies. The worst that can happen is that the water won’t warm up.
In this situation, what should I do? You just need to connect the drain hose correctly to solve the simple problem. The user can handle the issue by making sure the dishwasher’s water circulation is normal.
There are occasions when a clogged filter unit prevents the machine from heating the water. The "garbage can" and the heating element don’t appear to be connected at first. Still, this is untrue.
Normally, the washing chamber’s water should flow continuously. The flow heater keeps the liquid at a constant temperature, which allows for excellent cutlery cleaning. The circulation decreases when the filter unit becomes clogged.
As a result, water stops flowing back to the special tank and accumulates in the washing chamber. As a result, the machine must refill by using water from the supply. In such a case, the heating element just does not have enough time to reheat the water to the proper temperature.
It is vital to track the PMM’s cycle performance in order to validate the intuition. While washing, peek inside the working chamber. Water shouldn’t normally build up in the tank. The filter node needs to be cleaned if there is liquid remaining at the bottom of the hopper. Once the water starts flowing again, the issue will be resolved.
Sometimes the issue is just a common user mistake. For instance, the hostess inadvertently selects a delicate algorithm with heating as low as 30 degrees because she is accustomed to washing the dishes in intensive mode at 60 degrees. She believes that the machine has stopped warming in this instance, but this is untrue. The next time, you can launch the well-known program.
Lastly, the PMM pressure sensor could be the source of the problem. It regulates and guarantees the typewriter’s fluid flow. It is possible to see self-sampling water when the element malfunctions.
The heating element will not have enough time to heat the water to the appropriate temperature in such a scenario, and the dishwasher will start to refill the tank with cold water. You will need to replace the element in order to resolve the issue. It won’t be feasible to repair the sensor; your best bet is to try cleaning its contacts.
Temperature sensor or control module
The temperature sensor is Indesit dishwashers’ weak point. It frequently causes the dishwasher to stop heating the water. The thermostat is easy to check on your own. The following actions are what you ought to take:
- prepare the tools: screwdrivers (Phillips and slotted), pliers and a multimeter;
- de-energize the dishwasher by pulling the power cord out of the outlet;
- close the shut-off valve and disconnect the dishwasher from the house communications;
- pull out the cutlery baskets from the dishwasher chamber;
- dismantle the sprinkler located at the bottom of the dishwasher tank;
- remove the filter element and the metal mesh located under it;
- unscrew the two fasteners that were hidden under the mesh;
- lay the dishwasher on the floor and unscrew the side fasteners;
- unhook the drain pipe from the plastic box with the heating element;
- find the temperature sensor, it is located in the "box" of the heating block;
- disconnect the wiring from the thermostat contacts;
- clean the sensor contacts and measure the resistance it produces;
- if the temperature sensor has burned out, pull it out and replace it.
A multimeter is used to measure the resistance between the temperature sensor’s contacts.
Occasionally, the wiring that powers the temperature sensor becomes problematic rather than the sensor itself. Examine the cables to see if they have burned out or if their insulation has been harmed. If any flaws are discovered, swap out the cable.
Rarely, an electronic unit malfunction causes the water to stay cold. The control module will only be the "culprit" of the malfunction in 1% of cases. More specifically, a few triacs on the board, not the entire thing.
You can examine the electronic unit at home. On the board, imperfections can occasionally be seen that are visible to the unaided eye. The module will need to be replaced or repaired in this situation.
Attempting to fix the control module yourself is not advised. Working with this unit necessitates a certain level of training due to its complexity. If not, all you will accomplish is exacerbate the problem. It is best to leave board diagnostics and repairs to the experts at the service center.
It can be annoying when your Indesit dishwasher stops heating the water, but the first step in fixing the problem is figuring out what’s causing it. Resolving the issue as soon as possible is essential to getting your appliance operating again, whether it is a malfunctioning thermostat, heating element, or wiring issue.
Frequent upkeep and sporadic inspections can aid in the prevention of these problems. By monitoring the performance of your dishwasher, you can identify any issues early on and avoid having to spend time and money on repairs.
It’s usually advisable to speak with an expert if you’re not sure whether you can handle the repairs yourself. They can quickly identify the problem and resolve it, guaranteeing that your dishwasher will continue to function properly for many years to come.
