Thermador Refrigerator: not working

Professional Repair Guide

What is this symptom?

If your Thermador refrigerator is not working, you may experience a complete lack of cooling, with no compressor activity, lights, or display. This issue can stem from various causes, including power supply problems or failed compressor components. Immediate attention is needed to diagnose and resolve the problem effectively.

Urgency: High

Important Tips for Thermador Models

  • Official Thermador troubleshooting emphasizes checking power supply and breaker first for a fridge that does not turn on.

Possible Causes

Power supply or power connection issues

How to Identify: Refrigerator appears dead, no lights or sounds; test outlet with another device; check breaker and fuse.

Part: Power cord / outlet / circuit breaker

Failed compressor start components (start relay, overload, capacitor)

How to Identify: Compressor won’t start, may hear clicking every few minutes; fridge lights may be on but no cooling begins; start relay may rattle when shaken.

Part: Start relay / overload protector / start capacitor

Faulty compressor

How to Identify: No compressor sound or vibration even with power confirmed; unit feels hot; sustained silence from back of fridge.

Part: Compressor

Electronic control board failure

How to Identify: No response or operation despite power confirmed (lights on; other systems unresponsive; may show error codes or none.

Part: Control board / main PCB

DIY Solutions

Check power supply and outlet

Easy 5-15 minutes
Tools Needed: none or outlet tester
  1. Ensure the fridge is plugged in securely.
  2. Test the outlet with another device (e.g., lamp) to confirm it has power.
  3. Check circuit breaker and reset if tripped.
⚠️ Safety First: Do not work on electrical components with wet hands.

Clean condenser coils and ensure airflow

Moderate 20-40 minutes
Tools Needed: vacuum, coil cleaning brush
  1. Unplug the refrigerator.
  2. Locate condenser coils (back or beneath fridge).
  3. Clean dust and debris using brush and vacuum.
  4. Ensure fridge has adequate space around for airflow.
⚠️ Safety First: Unplug before cleaning.

Inspect and test start relay (for compressor not starting)

Advanced 30-60 minutes
Tools Needed: multimeter, screwdriver
  1. Unplug the fridge and pull it away from the wall.
  2. Remove rear access panel.
  3. Locate start relay on compressor and remove it.
  4. Shake gently; if it rattles or shows burn marks, replace it.
⚠️ Safety First: Disconnect power before service.

Next step

Choose the next step for not working

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Power Cord

Supplies mains power to the appliance and includes the model-specific plug and terminal connection.

Typical part-only price
$15 - $70
DIY difficulty
Medium
Estimated time
20-45 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Capacitor

Stores electrical energy to assist in starting or running the motor efficiently.

$15 - $35 · Easy · 10-20 mins

Check fit & price
Possible related component

Compressor

Compresses refrigerant within the sealed cooling system and requires specialized service equipment.

$180 - $600 · Hard · 120-240 mins

Check fit & price
Possible related component

Main Control Board

The central brain of the appliance that controls all components, cycles, and timings.

$120 - $280 · Medium · 20-40 mins

Check fit & price
Model number required

Model-compatible Refrigerator parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Refrigerator Condenser Coil Brush

For routine cleaning of accessible condenser areas where the manufacturer permits it. It does not repair a sealed-system or compressor fault.

View maintenance supply
Maintenance supply

Model-Compatible Refrigerator Water Filter

A routine replacement item on models with a water filter. Match the complete appliance model and existing filter number before ordering.

Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.

Find one that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace compressor start system (relay/overload/capacitor)

Estimated Cost: $100 - $300

Replace compressor

Estimated Cost: $500 - $1200

Replace electronic control board

Estimated Cost: $200 - $600

When to Call a Professional

If the refrigerator shows no power despite confirming outlet and breaker are functional.
If compressor start components replacement steps are beyond DIY skill.
If electronic control board or sealed system (compressor) failure is suspected.

Preventive Maintenance

  • Clean condenser coils: Overheating and compressor shut-down issues
    Frequency: every 6 months
  • Inspect door seals: Cold air leaks and inefficient operation
    Frequency: annually
  • Test temperature settings: Incorrect settings leading to inefficiency
    Frequency: monthly

Frequently Asked Questions

Why is my Thermador Refrigerator not working?
Common causes include power supply issues, failed compressor components, or a faulty control board.
How do I fix Thermador Refrigerator not working myself?
Check the power supply, clean the condenser coils, and inspect the start relay for issues.
How much does it cost to fix not working?
Professional repairs can range from $100 to $1200 depending on the issue, such as replacing the compressor or control board.
When should I call a technician for not working?
Call a technician if DIY checks don't resolve the issue, especially for complex repairs.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Power supply issue (tripped circuit breaker or unplugged unit)
  • Faulty thermostat preventing the refrigerator from cooling
  • Defective control board affecting lights and icemaker functionality

User Suggested Solutions

  1. Check the power supply: Ensure the refrigerator is plugged in and check the circuit breaker for any tripped switches. Reset the breaker if necessary.

  2. Test the thermostat: Use a multimeter to check the thermostat's continuity. If it's faulty, replace it with a new one.

  3. Inspect the control board: Look for any visible damage or burnt components. If defective, replace the control board.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Thermador Icemaker and Freezer lights Went Out

Community Discussions

The lights and the icemaker stopped working

Reconnected the wires with barrel connectors after they snapped.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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