It sounds like there may be an issue with the ignition system specifically for the wok burner. Here are a few potential causes:
- Faulty Ignition Head: The ignition head may not be generating enough spark to ignite the gas. Since you mentioned that a weak spark can be seen when foil is placed between the ignition head and earth, this could indicate a weak spark from the ignition head.
- Dirty Ignition Head: If the ignition head is dirty or covered in grime, it may not be able to generate a strong spark. You can try cleaning the ignition head with a soft brush or a toothbrush to remove any debris or buildup.
- Loose Connections: Check to make sure all the electrical connections for the ignition system are tight and secure. A loose connection could cause the ignition to fail.
- Faulty Spark Module: The spark module provides power to the ignition system. If it's faulty, the ignition may not work properly. However, since the other burners are working fine, it's less likely that the spark module is the issue.
If none of these solutions work, it may be best to call a professional to diagnose and repair the issue.
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