Haier HBU-18HF03 Manual page 234

continues running for 6 hours, then the unit will stop.
3.7.2.2 Standard sleep function in heating mode, after running at SLEEP mode for 1 hour, the set
temperature reduces 2℃, another 1 hour later, the set temperature will reduce 2℃, and another 3 hours
later, the set temperature rises 1℃; the unit continues running for 3 hours, then the unit will stop.
3.7.2.3 Non-standard SLEEP function: the sleep function can realize 1~8 hours sleep mode when being
combined with the TIMER function.
1) When in Auto mode, the unit will make SLEEP operation due to the setting.
2) After setting SLEEP function, the clock can not be adjusted.
3) If sleep time is no more than 8 hours, when the time arrives, the unit wil shut off.
4) If sleep function is set after setting TIMER OFF function, the unit will execute as the SLEEP function.
5) If SLEEP function is set, the TIMER function can not be set.
6) If sleep function is set after setting TIMER ON function, the sleep function only can be set befroe the
TIMER ON time arrives.
7) After setting sleep function, press CLOCK button to check the clock; press TEMP button to display the
set temperature, and press again to change the set temperature.
3.7.3 Emergency operation
Press emergency button for over 1 second continuously, when loosing it, the buzzer will sound once.
Press and will enter emergency operation.
Emergency operation: AUTO cooling state, the set temperature 24℃, indoor motor at high speed, not
adjusting the temperature sensor abnormal and the protection, the thermostat ON, 3 minutes later, the
compressor starts up, and another 3 minutes later, quit the trial running and enter the normal operation
as the setting(resume temperature sensor and protection); Press again, enter the shutoff state.
3.7.4 Compulsory cooling operation
In OFF state, press compulsory button for over 10 seconds continuously, loose it and the buzzer will
sound twice, then the unit enters the compulsory cooling operation, or after the panel receives the
compulsory cooling signal from wired controller, the unit enters the compulsory cooling state, there is no
compressor 3-minute protection, the unit will run in cooling mode, and indoor/outdoor motors are in high
speed for 5 minutes; in the 5 minutes, the system will not adjust the protection and not be limited by the
ambient temperature, 5 minutes later, the unit will enter the normal state. In the compulsory cooling state,
you can press any button to quit the state.
3.7.5 Water level inspection and water pump control
1) In COOL (including cooling state of AUTO mode and the compulsory cooling) and DRY mode, as long
as the compressor runs, water pump will work; and once the compressor stops, water pump will stop 5
minutes later;
2）In standby state of cooling mode, heating mode and fan mode, after water tank is full, the float switch
will disconnect, if the controller detects this signal for 2 seconds, the water pump will begin to work. After
the float resets, water pump will continue working and stops 5 minutes later;
3) If the water-full signal is detected for over 5 minutes, the compressor will stop; water pump will work
for 5 minutes and stop for 5 minutes, then repeat as a cycle, until the float resets, the water pump will
stop 5 minutes later; if water pump has repeated for 4 cycles and the float can not reset, and the unit will
alarm water drainage abnormal, and the water pump will continue the cycle.
3.7.6 Time shorting function
If the time shorting port is in short circuit for 2 seconds after conditioner being electrified, the buzzer will
sound once and enter time shorting operation, the unit will perform a 1/60 time shorting control.
3.7.7 Auto-restart function
In 5 seconds press the SLEEP button for 10 times, the buzzer sounds 4 times, that is setted as
Electric control functions
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