Haier YR-E20, Руководство по эксплуатации и установке

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2. Keep pressing function key for 5seconds (if indoor unit is
responded as four-way cassette, keep pressing function
key for 10 seconds, the controller will display error.), the
controller will display error. Current error will be displayed
before colon at top-left corner and historic error after the
colon. If no current error, it displays “--” and no historic error
“--”. Under error inquiry state, keep pressing function key for
5 seconds to clear current and historic error. If there is still
current error, it will display current error again.
3. Press any key to quit the error inquiry state. Wired controller
will quit the error inquiry state or error cleaning state if no
operation for 10 seconds.
4. If there is communication error between wired controller and
indoor unit, wired controller will display E8 and error icon.
Wired controller can be operated normally and display the
set temperature when adjusting. If there is no operation for
3s, it displays E8 again. If the communication restores,the
error is relieved.
Child Lock
1. Keep pressing fan & function keys for 5 seconds, is
displayed. Every key except function key (for cancellation
of child lock) is invalid. Repeat fan & function keys for 5
seconds to cancel the child lock.