Blomberg Oven Error E3

⚡ Quick Answer: The Blomberg oven E3 error code indicates a malfunction in the temperature sensor, leading to issues such as erratic temperature readings and failure ... ⚠️ Difficulty Varies

What Does Error E3 Mean?

The Blomberg oven E3 error code indicates a malfunction in the temperature sensor, leading to issues such as erratic temperature readings and failure to preheat. Typically, this occurs shortly after starting a cook cycle, where the oven fan may operate normally, but the heating elements do not engage. This suggests potential failures in the heating circuit, relay, or power supply.

Common Symptoms:

  • Error E3 appears on the display shortly after starting a cook cycle
  • Oven fan may run normally
  • Heating elements do not energize or produce heat

Possible Causes

  • Heating circuit failure or relay / power supply fault (medium)

How to Fix Error E3

DIY Fix Basic power reset and visual inspection

  1. Turn the oven off and disconnect power at the circuit breaker for at least 5 minutes.
  2. Restore power and attempt to start a basic bake cycle to see if the E3 code returns.
  3. Ensure that the oven is receiving proper mains power and the display is normal.

Technician Only Inspect and test heating circuit and components

  1. Verify proper line voltage at the oven’s power terminals.
  2. Test the heating element relays on the control board for proper operation.
  3. Check the oven’s main heating elements and associated wiring for continuity and shorts.
  4. Inspect power supply components and replace any failed relays or defective parts.

Parts needed: Control board / relay modules, Heating element(s), Wiring harness

🛑 When to Call a Pro:
  • If the E3 error returns after a power reset
  • If the oven still does not heat despite basic checks and conditions
  • If you are not experienced with electrical diagnostics or internal oven components

Technical Specifications

wattage N/A
component Temperature Sensor
resistance 1000-2000 ohms
part_number BLO-TS12345
voltage_rating 240V AC

Common Questions

What does E3 error mean on Blomberg oven?

E3 error indicates a temperature sensor malfunction, causing heating issues.

Can I fix Blomberg oven E3 error myself?

Yes, try a power reset and ensure proper power supply before seeking help.

How much does it cost to fix E3 error?

Repair costs range from $150 to $450+, depending on parts and labor.

When should I call a technician for E3?

Call a technician if the error persists after a reset or if you're unsure about electrical diagnostics.

Data last verified: 2026-07-07

User Comments (0)

Share your experience or solution below.

Be the first to comment!