E300

Wiring error at first power-up (E300)

Appliance: Gaggenau Kitchen Appliances Models: BM 450/451, BM 484/485

⚠ What This Means

Error code E300 is displayed on the Gaggenau combi-microwave. This indicates an incorrect wiring connection at the first power-up, or that the L1 and L2 power lines were not energized simultaneously.

🔧 How to Fix

  1. Have a qualified electrician check the wiring of the appliance at the connection point.
  2. Verify that L1 and L2 are powered on simultaneously.
  3. If wiring is correct and the error persists, it may indicate a failure of the module combination. Contact Gaggenau after-sales service and provide the error code.

🔍 Possible Causes & Solutions

Possible CauseHow to Fix
Incorrect wiring at installationHave a qualified person check and correct the wiring.
L1 and L2 not powered simultaneouslyEnsure both power lines are energized at the same time.
Module combination failureContact after-sales service.
Test Specifications
Power supply: 208/240 V, 60 Hz
Fuse: 20 A

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