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How do I troubleshoot Electrolux Compact Condensing Dryer that is displaying Ex21 or Ex22 error code?

Check the wire harness between the main electronic control board and the condensate drain pump when you unplug the dryer. If the wire harness is damaged, you can connect it or replace it. The pump and drain hose should be checked if the wire harness connections are okay. If the path is clear, replace the pump. The control board needs to be replaced if the problem continues.

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