Where the Indesit refrigerator has a temperature sensor: search and check

Refrigerators Indesit are one of the most popular in Russia due to the combination of price and functionality. But even reliable equipment sometimes breaks down, and one of the common problems is incorrect operation temperature sensor. It is responsible for maintaining the set mode in the chambers, and if the refrigerator freezes food, does not turn off, or, conversely, does not cool well, this element may be to blame.

In this article we will look at where to look for a temperature sensor in refrigerators Indesit different models (including series C 167 NF, D 4200, B 18 and others), what it looks like, and what signs indicate its malfunction. You will also learn how to check the sensor with a multimeter and what to do if it fails. The information is suitable for both refrigerators with the system No Frostand for models with drip defrosting.

Before disassembling the refrigerator, make sure that the problem is in the sensor. Sometimes similar symptoms are caused by malfunctions of the thermostat, electronic unit or compressor. If you are not confident in your abilities, it is better to contact a specialist.

Types of temperature sensors in Indesit refrigerators

In refrigerators Indesit two main types of temperature sensors are used:

• 🔹 Thermistors (NTC sensors) is the most common option. Their resistance changes depending on temperature. The colder the environment, the higher the resistance (and vice versa).
• 🔹 Thermocouples - are less common in household models, but can be installed in some series with electronic control. They generate a small voltage when the temperature changes.

In most modern refrigerators Indesit (for example, C 167 NF, D 4200 W, B 20) are exactly NTC thermistors. They are compact, cheap to produce and accurate enough for home use. Thermocouples can often be found in industrial or semi-professional models.

Temperature sensors in refrigerators Indesit usually perform two functions:

1. Temperature control in refrigeration chamber.
2. Temperature control in freezer compartment (in models with two sensors).

In budget models (for example, Indesit B 16there may be only one sensor that is responsible for both chambers. In more advanced ones (for example Indesit C 167 NF) there are separate sensors for each zone.

Where the temperature sensor is located in the refrigerator compartment

In most models Indesit the temperature sensor of the refrigerator compartment is located inside the case, next to the evaporator or on the back wall. The exact location depends on the type of defrosting system:

• 🔧 Drip system (crying evaporator) — the sensor is usually hidden under a plastic panel on the back wall of the chamber. It can be found by removing the cover that covers the evaporator.
• ❄️ No Frost - the sensor is most often installed in the air duct or next to the fan. Sometimes it is attached to the evaporator, which is hidden behind the back panel of the freezer (if the system is shared).

To get to the sensor in the refrigerator compartment:

1. Unplug the refrigerator.
2. Remove all food and shelves that may be in the way.
3. Remove the plastic cover on the back wall (usually it is secured with latches or screws).
4. The sensor will look like a small plastic cylinder with two wires going to the electronic unit.

In models Indesit C 167 NF and similar, the refrigerator compartment sensor is often located at the top of the back wall, next to the lighting lamp. In older models (for example Indesit B 16), it can be found closer to the middle.

Location of the sensor in the freezer compartment

In the freezer compartment, the temperature sensor Indesit is usually located closer to the evaporator. Its exact location depends on the design:

• 🧊 In models with manual defrosting the sensor is often attached directly to the evaporator (metal plate on the back wall).
• ❄️ In refrigerators No Frost The sensor can be installed in the duct or on the evaporator tube, which is hidden behind the panel.

To access the sensor in the freezer:

1. Defrost the freezer (if not No Frost).
2. Remove the inner back panel (usually it is secured with screws or latches).
3. The sensor will look like a small plastic or metal element with wires going down or to the side.

In models Indesit D 4200 and similar ones, the freezer sensor is often located at the bottom, next to the drainage hole. No Frost (for example, Indesit C 167 NF) it can be found behind the panel covering the fan.

What to do if the sensor is frozen?

If the sensor is covered with ice, its readings will be inaccurate. In this case, you need to completely defrost the refrigerator (for 12-24 hours), and then check whether it has recovered. If the problem persists, the defrost heater (in No Frost systems) or the door seal may be faulty.

What the Indesit temperature sensor looks like: photo and description

The temperature sensor in refrigerators Indesit is a small element that is easily confused with other parts. Here are its main parts. signs:

• 📏 Size: usually 2–4 cm in length, diameter about 0.5–1 cm.
• 🔌 Connection: two wires (most often white, red or black) going to the electronic unit.
• 🛠️ Mounting: can be secured with a plastic clamp, adhesive tape or screw.
• 🔍 Marking: sometimes there is an inscription on the sensor (for example, NTC 10K or TH1).

The photo below shows a typical temperature sensor Indesit (example for the model C 167 NF):

[Here would be an image of the sensor indicating the wires and mounting]

In refrigerators with electronic control (display), sensors can be more compact and integrated into the board. In mechanical models (with thermostat) the sensor is often a thermistor connected to a thermostat.

If your model is not listed in the table, be guided by the general principles: the sensor is always located next to the cold source (evaporator) and connected to the electronic unit or thermostat.

Signs of a malfunctioning temperature sensor

If the temperature sensor in the refrigerator Indesit fails, this is manifested by the following symptoms:

• ❄️ Freezing food in the refrigerator compartment (ice formation on the back wall, freezing of vegetables and fruits).
• 🔥 Insufficient cooling —the refrigerator works, but does not reach the desired temperature.
• ⚡ Continuous operation of the compressor no shutdowns (or, conversely, too frequent on/off cycles).
• 📛 Errors on the display (if the model is electronically controlled). For example, a code F04 or F05 may indicate a problem with the sensor.
• 💧 Excessive condensation or puddles inside the camera.

However, the same symptoms can also occur with other malfunctions:

• 🔌 Problems with thermostat (in mechanical models).
• 🖥️ Malfunction electronic control unit.
• 🚪 Damage door seal.
• ❄️ Clogged drainage system or malfunction defrost heater (in systems No Frost).

Before blaming the sensor, check:

1. Whether the door closes tightly.
2. Is there ice on the back wall (in models with a drip system).
3. Does the fan work (in systems? No Frost).

How to check the temperature sensor with a multimeter

If you suspect that the sensor is faulty, you can check it using a multimeter. To do this:

1. Unplug the refrigerator.
2. Remove the panel behind which the sensor is located (as described above).
3. Disconnect the sensor connector from the wires (remember or take a photo of the connection order!).
4. Switch the multimeter into resistance measurement mode (ohmmeter) to the range 20 kOhm.
5. Connect the probes to the sensor contacts.
6. Measure the resistance at room temperature (usually ~20–25°C).

Normal resistance values for NTC sensors Indesit:

• 🌡️ At 20–25°C: ~10 kOhm (can vary within 8–12 kOhm).
• ❄️ At 0°C: ~30–35 kOhm.
• ❄️❄️ At -18°C: ~50–70 kOhm.

To make sure the sensor is working:

1. Immerse it in a glass of cold water (or apply ice).
2. Watch for changes in resistance - it should increase as it cools.
3. If the resistance does not change or the sensor shows a break (OL) - it is faulty.

In models with a thermocouple, the voltage is not checked (in millivoltmeter mode). data-i="207">Disconnect the refrigerator from the network 1–5 mV.

What to do if the sensor is faulty

If the check shows that the temperature sensor is faulty, you have two options:

1. 🔧 Replace the sensor yourself (if you have experience working with equipment).
2. 👨‍🔧 Contact the service center (recommended if the refrigerator is under warranty).

To replace the sensor:

1. Buy a similar sensor (check the refrigerator model and sensor type with the seller).
2. Disconnect the refrigerator from the network.
3. Remove the old sensor by disconnecting the wires and fastening.
4. Install the new sensor in the same place, connect the wires in the same order.
5. Assemble the refrigerator and check its operation.

The cost of a temperature sensor for Indesit usually is 300–1000 rubles, depending on the model. Replacement at a service center will cost 1500–3000 rubles (including work).

⚠️ Attention: If the sensor is located in the area No Frost, when replacing, be careful with plastic parts. They may be fragile, especially after long-term use.

After replacement sensor:

• Let the refrigerator operate for 1-2 hours in normal mode.
• Check the temperature in the chambers using a thermometer.
• Make sure that the compressor turns off periodically (the cycle should be ~20-30 minutes of operation and 10-15 minutes of rest).

FAQ: Frequently asked questions about temperature sensors in Indesit

Is it possible to repair a temperature sensor, or just replace it?

Temperature sensors (thermistors or thermocouples) are non-repairable elements. If they fail, they can only be replaced (for example, soldering). do not give a long-term result.

How to distinguish a sensor failure from a thermostat failure?

In mechanical refrigerators, thermostatis responsible for the temperature, and in electronic ones - sensor + control boardIf the refrigerator is mechanical (temperature adjustment with a wheel), the problem is most likely in the thermostat. If it is electronic. (with display) - in a sensor or board. Only a master can carry out accurate diagnostics.

Where to buy a temperature sensor for Indesit?

Sensors are sold in:

• 🛒 Stores of spare parts for household appliances (for example, "220 Volt", "Electronics and Service").
• 🌍 Online platforms (AliExpress, eBay, specialized sites).
• 🔧 Service centers Indesit (original spare parts).

When purchasing, specify refrigerator model i sensor type (NTC, thermocouple).

Can a refrigerator operate without a temperature sensor?

Technically yes, but this will lead to:

• ❄️ Constant operation of the compressor (freezing).
• 🔥 Or, conversely, insufficient cooling (if the control board “thinks” that the temperature is at normal).
• ⚡ Increased energy consumption.

It is not recommended to operate the refrigerator without a sensor for more than 1-2 days.

How to reset the temperature sensor error on the display?

In most models Indesit the error can be reset as follows:

1. Unplug the refrigerator for 1-2 minutes.
2. Plug it back in.
3. If the error remains, check the sensor or contact service.

In some models, you can reset the error using a combination buttons (for example, holding Super Cool + Super Freeze for 5 seconds). Look for exact instructions in the manual for your model.