Sinclair SDV 6 User & Installation Manual page 24

Auto Operation of Auxiliary heat source: Upon power on, the air
conditioner will determine whether to start the auxiliary heat
source automatically based on the ambient temperature in
heating mode. At this moment, the air conditioner operates in
"Auto Operation of Auxiliary heat source" mode.
Auxiliary heat source Used Independently: The auxiliary heat
sourcecan be used independently without starting the
compressor. It only applies to certain customized models.
The auxiliary heat source can only be started in heating mode.
The auxiliary heat source is an additional heating component to
the air conditioner, but the power consumption will increase
after the auxiliary heat source starts working.
Powerful operation: After powerful operation is enabled, the IDU will
CAUTION
accelerate cooling/heating. Powerful operation is
only available for cooling or heating mode.
After powerful operation is enabled, the maximum
runtime of the IDU is 30 minutes. After powerful
operation is disabled, the IDU will be controlled
normally.
Power operation will quit in case the operating mode
or fan speed is changed.
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