Component Repair — Samastipur

Refrigerator Thermostat Problems in Samastipur — Signs & Repair Cost

July 2026 Repair Guru SPJ 5 min read Samastipur, Bihar

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The thermostat is the small dial or electronic sensor that tells your compressor when to switch on and off to maintain temperature. When it fails, you'll usually see one of two extremes — the fridge barely cools, or it never stops cooling at all.

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Compressor Never Switches Off

A thermostat stuck in the "on" position keeps signalling the compressor to keep running even after the fridge reaches target temperature, leading to over-cooling and high power bills.

Signs: Compressor runs almost 24/7 with no rest cycles.

Rs 400 - 700

Compressor Never Starts

The opposite fault — a thermostat stuck "off" never tells the compressor to start, so the fridge stays at room temperature no matter how long it's plugged in.

Signs: No cooling at all, but the compressor works fine when tested manually.

Rs 400 - 700

Inconsistent or Random Cooling

A worn-out mechanical thermostat can give inconsistent readings, causing the fridge to cool unpredictably — cold one day, warm the next — without any other visible fault.

Signs: Cooling performance changes day to day with no clear pattern.

Rs 400 - 700

Digital Sensor Fault (Frost Free/Inverter Models)

Newer fridges use an electronic temperature sensor connected to the PCB instead of a mechanical dial. A faulty sensor here often shows an error code or erratic display readings.

Signs: Display shows unusual temperature readings or an error code.

Rs 600 - 1,200

Frequently Asked Questions

How can I test if my thermostat is faulty?

Turn the dial from lowest to highest setting — you should hear a distinct click as the compressor starts. If there's no click and no change in compressor behaviour, the thermostat is likely faulty.

Is thermostat replacement a quick fix?

Yes, on most single door and double door fridges it's a straightforward part swap completed within an hour.

Can a bad thermostat increase my electricity bill?

Absolutely — a thermostat stuck "on" makes the compressor run constantly, which is one of the more common hidden causes of a high power bill from an old fridge.

Is this different from a PCB problem?

Yes. A mechanical thermostat is a standalone part; a digital sensor issue is tied to the fridge's control board. We test both separately to identify the exact fault before quoting.