Description

Original thermostat for Liebherr refrigerator 6151807

The original 6151807 Ranco K59-S2777 thermostat is the control part responsible for maintaining the correct temperature in your Liebherr refrigerator and freezer. It fits the KTS, KT, KTP and GK series, and replaces a faulty thermostat that causes unstable cooling, ice buildup, or the refrigerator not reaching the required temperature. Original part with a 523 mm long capillary tube and 3 AMP connections.

⚠️ The thermostat is the heart of the cooling system – replacing it requires professional technical knowledge. It is highly recommended to contact a qualified technician from the official service. A non-original part may cause expensive compressor failure.

A moment before ordering – safety above all! To ensure a successful repair and maintain the life of your refrigerator, it is imperative to use only original parts. Now click the 'Check Model Compatibility' button at the top of the page and our system will immediately confirm that the part is suitable for you.

When is a faulty thermostat the cause of a malfunction?

The refrigerator is not cooling, too cold, or the temperature is unstable – these are the classic signs that the thermostat needs to be replaced. The thermostat is the “brain” of the refrigeration system: it measures the temperature in the compartment and turns the compressor on or off accordingly. When it breaks down, the refrigerator stops controlling the cooling.

Typical signs of a thermostat malfunction:

• ✅ The refrigerator runs continuously and does not stop at all
• ✅ The temperature changes regardless of the direction of the control dial
• ✅ Excessive ice buildup in the freezer compartment
• ✅ The refrigerator is hot even when the compressor is working
• ✅ Unusual stopping noise of the compressor

It's important to distinguish: Before ordering a thermostat, check that the refrigerator is not clogged with goods, that the rubber seals are in good condition, and that the drain channel is open. A faulty thermostat is one of the causes - but not the only one.

📋 Technical specifications

✅ Compatible models

The part is compatible with 201 Liebherr models (ensure exact match with E-Nr number on the model sticker):

GK Series:

• GK200 and its updates

KT/KTS/KTP series:

• KT1444, KT1544, KT1414
• KTS125, KTS126, KTS126-2W, KTS127, KTS127-2W
• KTS1204, KTS1404, KTS1414, KTS1424
• KTS146, KTS147, KTS148, KTS149
• KTP1444, KTP1444-2W

T/TP/TSL series:

• T1404, T1404-2W, T1514, T1514-2W, T1714
• TP1714, TP1714-21, TPESF1714, TPESF1714-2
• TSL1414, TX1021-2

Where is the model number (E-Nr) sticker on a Liebherr refrigerator? The E-Nr sticker is usually located on the inside wall of the refrigerator – on the top left, or on the back of the appliance. The number starts with “E-Nr” followed by a series of numbers.

🔧 Can I replace a thermostat myself?

Replacing a thermostat is a complex operation that requires dismantling the control panel, disconnecting electrical connections, and rewiring. Work time for an experienced technician: 30-45 minutes.

⚠️ Important: Replacing a thermostat requires professional electrical and technical knowledge. It is recommended to call a certified technician from the official service. Incorrect installation may cause electrical damage, compressor failure, or even fire.

Critical Warning: Never shorten the thermostat's capillary tube. Shortening it will invalidate the part and render it inoperable.

💡 Tip from the experts

From our technicians' experience, the most common mistake we see is misdiagnosis – customers who replaced a thermostat when the real problem was a clogged drain. A simple test: turn on the refrigerator and after 20-30 minutes feel the inside wall of the freezer – if it is completely hot, it is probably a compressor or gas; if it is cold but not enough, it may be a thermostat. Correct diagnosis saves money and prevents unnecessary replacement of a part.

❓ Frequently Asked Questions

How do you check if the thermostat is the cause of the problem?

The simple way: Turn the control dial all the way to the end. If you don't hear a click and there is no change in the compressor's behavior, the thermostat is probably faulty. An accurate test is done with a multimeter - a technician will check the continuity of the contacts within minutes.

Can a generic thermostat replace the 6151807?

Not recommended. The original thermostat 6151807 is calibrated specifically for Liebherr refrigerator series, including temperature range, capillary tube length, and exact operating voltage. An unapproved thermostat may cause overcooling, compressor damage, and even disrupt the operation of NoFrost systems.

How long does an original Liebherr thermostat last?

From the experience of our technicians, an original thermostat lasts an average of 10-15 years. The part does not require regular maintenance. Life-shortening factors: unstable electrical voltage in the network, abnormally high humidity, and extreme heat load on the refrigerator.