Error code

Zehnder ComfoAir All models code LED4

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Meaning

Supply air mode

Member details

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

Possible causes

Touching the (+) button for 5 seconds in operating modes FS1 to FS4 activates or deactivates the Supply air mode. The extract air fan is switched off; the supply air fan continues to run with the current fan speed. If the outdoor temperature falls below 13 °C, the extract air fan will be activated. The display for the current fan speed alternates every 2 seconds with the flashing LED4

Solution

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