How to check the thermal fuse of the Indesit refrigerator: 3 diagnostic methods

The refrigerator Indesit stopped freezing, but the light inside is on? Does the compressor not start or work intermittently? The reason may lie in a faulty thermal fuse - a small but critical element of the protection system. This part prevents overheating of the motor and short circuits, and if it breaks, it blocks the power supply to the compressor.

Checking the thermal fuse is one of the first diagnostic procedures that you can perform yourself without special skills. In 70% of cases of problems with cooling in refrigerators Indesit models C 132 G, B 18, T 16 and similar ones, this component turns out to be the culprit. In the article we will look at where the thermal fuse is located, how to test it with a multimeter, and what to do if it burns out.

Where is the thermal fuse in the Indesit refrigerator

In most models Indesit the thermal fuse is located next to start-up relay the compressor - in the bottom parts of the back wall of the refrigerator. It is a small plastic or metal cylinder with two contacts, often wrapped in heat shrink tubing. In some modifications (for example, Indesit BIAA 13), the part can be hidden under the motor protective casing.

To get to the fuse:

• 🔌 Disconnect the refrigerator from the network and move it away from walls.
• 🔧 Remove the rear protective panel (if any) or simply inspect the compressor compartment.
• 🔍 Look for a part with a marking T°F, Thermal Fuse or alphanumeric code (for example, 125V 5A).

In refrigerators with a system No Frost thermal fuse can be duplicated - one protects the compressor, the second (of a lower rating) is installed on the defrost heater. If your model is equipped with a display, check the error code: F04 or F05 often indicate problems with thermal protection.

Signs of a malfunctioning thermal fuse

A burnt thermal fuse manifests itself clearly - refrigerator stops cooling, but the light inside continues to burn. This is a key symptom that distinguishes the problem from a thermostat failure or a freon leak. Other characteristic signs:

• ❄️ The compressor does not start at all or turns on for 1-2 seconds and turns off.
• 🔊 Clicks of the start-up relay are heard, but the motor does not hum.
• 🌡️ The temperature in the chambers rises, despite the set mode Super Cool.
• ⚡ An error flashes on the display F04 (for models with electronic control).

It is important to distinguish a fuse failure from problems with thermostat or start relay. If you hear a click when turning the thermostat knob, but the motor does not respond, the fuse is to blame. If the compressor hums but does not start, the problem may be in the relay or windings. motor.

⚠️ Attention: In refrigerators Indesit with inverter compressors (series Innex), the thermal fuse is often integrated into the control board. In this case, independent replacement is not recommended - flashing the module is required.

Methods for checking the thermal fuse

There are three reliable diagnostic methods: visual inspection, checking with a multimeter and a “direct connection” test. The latter is only suitable for experienced users, as it requires operation under voltage.

1. inspection

Inspect the fuse housing for:

• 🔥 Blackening or melting of the plastic.
• 💥 Broken circuit (visible through the transparent shell on some models).
• 🌡️ Swelling of the housing (indicates for overheating).

If the part is externally damaged, it must be replaced. However, the absence of visual defects does not guarantee performance: an internal break may be invisible.

2. Testing with a multimeter (the most reliable method)

You will need any multimeter (even the cheapest one for 300 rubles). Test algorithm:

1. Disconnect the wires from the fuse contacts.
2. Switch the multimeter to continuity mode (diode or resistance icon).
3. Touch both contacts of the part with the probes.

Result:

• 🔊 Sound signal and value 0.0–0.5 Ohm —the fuse is OK.
• 🚫 On the screen 1 or OL (break) - the part burned out.

Disconnect the refrigerator from the mains|Remove the terminals from the fuse|Check the battery in the multimeter|Set the dialing mode-->

3. Direct switching on (for advanced)

The method is suitable if at hand there is no multimeter, but there is a risk of electric shock. Procedure:

1. Disconnect the refrigerator from the network.
2. Remove the fuse and short-circuit its contacts with a piece of wire (jumper).
3. Plug in the refrigerator.

If the compressor has started - the fuse is faulty. Do not operate the refrigerator with a jumper for more than 1-2 minutes! This may lead to a fire.

⚠️ Attention: In refrigerators Indesit with electronic control (models EWT, EWD) direct contact closure can burn the board. Use this method only for mechanical models.

Table: Parameters of thermal fuses for Indesit refrigerators

If your model is not in the table, pay attention to the marking on the fuse body. For example, the inscription 5A 250V 125°C means that the part is designed for a current of 5 amperes, a voltage of 250 volts. and is triggered when heated to 125 degrees.

How to replace a thermal fuse yourself

If diagnostics have confirmed a malfunction, you can replace the part for 10–15 minutes. You will need:

• 🔧 Phillips screwdriver.
• 🔌 New fuse (analogue of the old one).
• 📸 Photo of the old connection diagram (in case of confusion with the wires).

Step by step instructions:

1. Disconnect the refrigerator from the network and turn it with the back wall towards you.
2. Remove the protective cover of the compressor (if any) - it is attached to 2-4 screws.
3. Disconnect the terminals from the fuse, remembering their location. Take a photo of the connection diagram!
4. Carefully remove the old part by pulling it towards you or snapping the latches.
5. Install a new fuse, connect the terminals in the same order.
6. Secure the lid and turn on the refrigerator to the network.

After replacement, observe the operation of the refrigerator for 1-2 hours. If the compressor starts and the temperature in the chambers begins to drop, the repair was successful. If the problem remains, check start relay or thermostat.

⚠️ Attention: In models Indesit with system Full No Frost (for example, Indesit ITF 118) the defrost heater thermal fuse can be hidden behind the evaporator panel. To access it, you will need to disassemble the inner rear wall of the freezer.

What to do if the fuse burns out again

If the new thermal fuse burns out immediately after installation or after a short time, the problem lies deeper. Possible reasons:

• 🔥 Compressor overheating due to clogged capillary tube or faulty fan.
• ⚡ Short short circuit in the motor windings.
• 🌡️ Incorrect operation thermostat, due to which the compressor works without stopping.
• 🔌 Problems with the voltage in the network (surges or low voltage).

In this case, comprehensive diagnostics will be required. Start by checking:

1. The resistance of the compressor windings (should be within 20–40 Ohms).
2. The operation of the condenser fan (it should rotate when the compressor is turned on).
3. The voltage in the socket (the permissible range is 220–240 B).

If you are not confident in your abilities, contact a specialist. Re-blowing of the fuse may indicate turn-to-turn short circuit in the compressor - in this case, the motor will need to be replaced.

How to check the compressor windings with a multimeter

1. Unplug the refrigerator.

2. Remove the cover from the compressor and disconnect the start relay.

3. Measure the resistance between the contacts:

- Between C (common) and S (start winding) - should be ~30 Ohm.

- Between C and R (working winding) - ~15 Ohm.

- Between S and R - the sum of the two previous values (~45 Ohm).

4. If the resistance is 0 or infinity, the windings are faulty.

The cost of repairs and where to buy spare parts

The price of a thermal fuse for Indesit depends on the model and type of part:

• 💰 Standard fuse (5A, 125°C) — 150–300 rubles.
• 💰 Double set (for No Frost) — 400–600 rubles.
• 💰 Original part with delivery — 500–1000 rubles.

Where buy:

• 🛒 Official Indesit service centers - guarantee of the original, but high price.
• 🛒 Online stores spare parts (for example, 220-Volt, All-Zapchasti) - wide range and analogues.
• 🛒 Radio market kiosks - cheaper, but there is a risk of running into a fake.

When purchasing, check whether the part is suitable for your model. For example, a fuse from Indesit C 132 G is not always compatible with Indesit BIAA 13 due to different rated current.

If you do not want to do the repairs yourself, the cost of replacing the fuse at a service center will be 1,500–3,000 rubles (including diagnostics). In regions, prices may be lower - please check by phone.

FAQ: Frequently asked questions about Indesit thermal fuses

Is it possible to replace a thermal fuse with a similar one from another model?

Yes, but only if they match rated current, voltage i temperature operation. For example, a fuse from Ariston with the same parameters is suitable for Indesit, since both brands belong to the same group of companies.

Why does the fuse burn out immediately after replacement?

This indicates short circuit in the circuit or compressor overheating. The most common causes: a faulty start relay, an interturn short circuit in the motor windings, or a clogged capillary system. Complex diagnostics are required.

How to check the thermal fuse without a multimeter?

There are two ways:

1. Visual inspection for melting or broken circuit.
2. Direct closure of the fuse contacts with a jumper (for 1–2 seconds!). If the compressor starts, the fuse is faulty.

Both methods are less reliable than checking with a multimeter.

How long does the thermal fuse last in an Indesit refrigerator?

The service life depends on operating conditions. On average, a part works for 5–10 years, but may burn out earlier due to:

• Frequent power surges in the network.
• Overheating of the compressor (for example, if the refrigerator is close to the wall).
• Faults in the cooling system (freon leakage, blockage capillary).

Is it possible to operate a refrigerator without a thermal fuse?

Absolutely not! The fuse protects the compressor from overheating and fire. Without it, the engine may burn out, and in the worst case, ignite. If the fuse burns out repeatedly, find and eliminate the cause rather than removing it from the circuit.