11
4.
Use and Operation Instruction
4.1. Interface display
4.2. Key and icon function instruction
2.1 Key function instruction
Key symbols
Designation
Function
Mute key
Under the heating mode or heating mode under the
automatic mode, the mute key operation is effective and used
to enter and exit the mute mode with one click.
Mode key
It is used to switch the unit mode, temperature setting, and
parameter setting.
On-off key
It is used to carry out startup & shutdown, cancel current
operation,and return to the last level of operation.
Up key
It is used to page up, and increase variable value.
Down key
It is used to page down, and decrease variable value.
Clock key
It is used as user clock, and to carry out timing setting.
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