C4

Vent path blocked or affected by wind pressure or fan trouble.

What it means

Vent path blocked or affected by wind pressure or fan trouble.

This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.

Do not operate with suspected blocked venting; have a qualified installer inspect it.

Manufacturer source

Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.

If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.