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I have a Saunier Duval aircon unit SDH 31-035w. It runs for 30 seconds and then switches off and displays the message L6. What does this mean?

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  • park_amos Sep 19, 2008

    Thanks

    The unit is only 1 month old so I don't think it's a lint and hair problem. I will call an engineer to check the refridgerant charge.

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That code means low pressure.
The unit has either lost it's refrigerant charge or the coil is dirty. Look at the unit and find the metal fins. Make sure they aren't plugged up with lint and hair. There are two coils on an air conditioner, one inside and one outside. It won't hurt to check them both.
If cleaning the filter and coils doesn't fix the problem, it's time to have a technician come and check the refrigerant charge.

Posted on Sep 19, 2008

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