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Error code reference

Thermador Refrigerator Error Code LOWPOWER

Appliance not working until voltage is above 85V (US) or 165V (EU).

Thermador codesThermador refrigerator codes

Appliance not working until voltage is above 85V (US) or 165V (EU).

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What LOWPOWER means on a Thermador refrigerator

The LOWPOWER error code on a Thermador refrigerator indicates that the incoming supply voltage has dropped below the minimum threshold required for safe operation. In the United States, the refrigerator will not function until voltage rises above 85V on a standard 120V circuit. In European installations, the threshold is 165V on a 230V circuit. The appliance actively monitors supply voltage and suspends normal operation when levels fall below these limits to prevent compressor and control board damage from low-voltage conditions.

Low voltage events are typically caused by external electrical supply issues rather than a fault within the refrigerator itself. Common sources include utility grid fluctuations, overloaded household circuits, undersized wiring, a failing utility transformer, or a problem with the main electrical panel such as a loose neutral connection or a failing breaker. Extension cords or power strips used to power the refrigerator can also introduce significant voltage drop under load.

Until the supply voltage returns to an acceptable level, the refrigerator's compressor, fans, and cooling systems remain inactive. If the LOWPOWER condition is persistent rather than a brief fluctuation, the underlying electrical supply issue must be diagnosed and corrected. A technician or licensed electrician should measure the actual line voltage at the outlet using a multimeter to confirm whether the problem originates from the household wiring, the utility supply, or the outlet itself.

Source: manufacturer service documentation.

Common causes of LOWPOWER

  1. 01

    Utility grid voltage drop or brownout

    Wiring / connection

    A drop in voltage from the utility provider, often during peak demand periods, can trigger this code. Check whether other high-draw appliances in the home are also experiencing issues, and contact your utility company if the problem is widespread.

  2. 02

    Overloaded household circuit

    Wiring / connection

    If too many high-draw devices share the same circuit as the refrigerator, the combined load can pull voltage below the safe operating threshold. The refrigerator should ideally be on a dedicated circuit.

  3. 03

    Loose or faulty neutral connection in the electrical panel

    Wiring / connection

    A loose neutral wire at the panel or at the outlet can cause significant voltage fluctuations. This is a potentially hazardous condition that requires inspection by a licensed electrician.

  4. 04

    Failing or undersized outlet or wiring

    Part replacement

    A deteriorated wall outlet or undersized supply wiring can cause voltage to drop under load. Measure the voltage at the outlet with a multimeter while the refrigerator attempts to start to confirm whether the outlet is delivering adequate voltage.

  5. 05

    Use of an extension cord or power strip

    Wiring / connection

    Extension cords and power strips introduce resistance that causes voltage drop, especially when the compressor starts and draws peak current. The refrigerator must be plugged directly into a grounded wall outlet.

See the test procedure for each cause

Frequently asked questions about LOWPOWER

What does LOWPOWER mean on a Thermador refrigerator?
The LOWPOWER code means the refrigerator has detected that the incoming supply voltage is below the minimum required for operation, which is 85V in the US or 165V in EU installations. The appliance suspends all cooling functions to protect internal components from damage caused by low-voltage conditions. The code will clear and normal operation will resume once the supply voltage returns to an acceptable level.
How do I fix the LOWPOWER error on my Thermador refrigerator?
Start by measuring the voltage at the wall outlet using a multimeter to confirm that low voltage is actually present. If the voltage is low, identify whether the cause is a utility brownout, an overloaded circuit, or a wiring issue in your home. Make sure the refrigerator is plugged directly into a grounded outlet rather than an extension cord, and consider having a licensed electrician inspect your panel and wiring if the problem persists.
Is the LOWPOWER error on a Thermador refrigerator dangerous?
The error code itself indicates the refrigerator has safely shut down to avoid damage, so the appliance is protecting itself correctly. However, the underlying cause of the low voltage, particularly a loose neutral connection in the electrical panel, can be a serious electrical hazard. If you suspect a wiring or panel issue, have a licensed electrician inspect your home's electrical system before using the outlet again.
Will resetting the refrigerator clear the LOWPOWER code?
Resetting the refrigerator will not resolve the LOWPOWER code if the supply voltage is still below the required threshold. The appliance will continue to display the error and remain inactive until voltage rises above 85V (US) or 165V (EU). Once the voltage issue is corrected at the source, the refrigerator should resume normal operation without requiring a manual reset.
How much does it cost to fix a LOWPOWER error on a Thermador refrigerator?
The cost depends entirely on the cause of the low voltage condition. If the issue is a utility brownout, there is no cost to you. Replacing a faulty wall outlet typically costs between $75 and $200 including labor. If the problem requires electrical panel work or circuit upgrades, costs can range from $150 to $800 or more depending on the scope of the repair. No parts within the refrigerator itself are typically required for this error.

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