Haier 3HUM20H03 User Manual - Page 21
Operation hints
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Operation hints Remote monitoring The control board of the indoor unit reserves the communication port for remote control. If you install the peripheral equipment according to the manual of the matching remote control detector, it can realize the computer management or remote monitoring of the conditioner. Please refer to the manual of the " Conditioner remote control detector" for the details Power failure resume(please set and apply as necessary) With setting of power failure resume, if sudden power failure occurs, the unit will resume original operation when power is supplied again. Setting method With ON of remote controller (except TIMER and FAN),repeatedly press SLEEP button 10 times in 5 seconds, after 4 Beep from the buzzer, the unit comes into power failure resume mode. To cancel: press SLEEP button continuously 10 times in 5 seconds, the buzzer sounds Beep twice and power failure resume function is canceled. Note: When sudden power failure happens during unit operation in power failure resume mode,if the air conditioner is not desired for use in a long period, please shut off the power supply in case that the unit automatially resume operation when power is re-supplied, or press ON/OFF to turn off the unit when power resumes. 20