ActronAir MWC-B01CS Operation Manual page 27

Timer Off can be set when the IDU is on and Timer On
can be set when the IDU is off.
5.3.5 Auxiliary heater on/off
This function works in heating mode.
Auto auxiliary heater on:
In heating mode, the auxiliary heater will be enabled
automatically depending on the ambient temperature and at
this time the IDU operates in Auto Auxiliary Heater On mode.
Auxiliary heater on:
Auxiliary heater off:
INFORMATION
i
AU-heat
Holding both for 3 seconds
AU-heat
Holding both for 3 seconds
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