Zanussi ZDH1802 Quick Start Quide page 14

USING YOUR DEHUMIDIFIER
Auto Defrost
When frost builds up on the evaporator coils, the compressor will cycle off
and the fan will continue to run until the frost disappears.
Auto-Restart
If the unit turns off unexpectedly due to a power cut, it will restart with
the previous function setting automatically when the power resumes.
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