Convotherm E05 Error Code

What does Convotherm E05 mean?

On gas combi ovens, E05 indicates a "no gas" condition. The manual attributes this to the gas supply being interrupted and lists the remedy as opening the gas tap. The burner cannot ignite without gas, so the control displays E05 and stops the heating cycle until the supply is restored.

Symptoms

• Display shows error code E05 with a "no gas" message
• Burner does not ignite and the oven fails to heat
• Cooking program stops on a gas model

Common causes

• Gas supply interrupted
• Gas tap closed

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Diagnostic steps

1. Open the gas tap

   The manual's remedy for E05 is to open the gas tap supplying the oven.

2. Check the building gas supply

   Confirm gas is available at the installation, since an interrupted supply is the listed cause.

3. Restart the oven

   After restoring gas, switch the combi off and on so it can re-attempt ignition.

4. Call customer service if it persists

   If gas is confirmed available but E05 remains, the unit should be inspected by service before further use.

When to call a professional

If the gas tap is open and the building supply is confirmed but E05 keeps returning, do not attempt to troubleshoot the gas train yourself. Any work on gas supply, the burner, or ignition components on a Convotherm gas combi must be performed by a qualified Convotherm by Cleveland authorized service representative because of the fire and explosion hazard.