Haier D Series Service Manual page 21

emergency switch function
7.1.9
Press the urgency button the buzzer will ring. The system will enter the automatic mode if you don't
press the button for more than 5 seconds.
Under the system off mode, if you press the urgency key for 5 to 10 seconds, the system will start the
test operation.
Under the system off mode, if you press the urgency key for 10 to 15 seconds, the display screen will
show the resume of the last malfunction.
If the system is under operation, the press on the urgency key will stop it.
Under the system off mode, the display screen will show automatic running sign.
Under the system off mode, the system will not receive the remote control signal if the press on the
urgency key doesn't last for 15 seconds or if the key is loosened.
Urgency operation: If you press the urgency key for less than 5 seconds, the buzzer will ring when you
press the on/off key. The system will enter the urgency operation when the urgency key is loosened.
The urgency operation is fully automatic.
Test operation.
The inlet temperature sensor doesn't work, the indoor fan and the indoor air direction board motor
works synchronically. High speed airflow, cooling, outdoor system on, etc, will send the ambient
temperature 30 centigrade and coil temperature 16 centigrade information to the outdoor system.
Test operation
The defrost protection of the evaporator doesn't work.
The temperature control doesn't work.
The test operation will be finished in 30 minutes.
The test operation can be stopped by the relative commands from the remote control.
7.1.10 Human sensor
Follow function: To detect the area of the person located , adjust the wind direction, blow to the people
directly.If detected two people in the area，the wind will be swing between the two position，and stay for 15s
at each position.If detected three or more people in the area, the right& left swing will be auto swing.
Evade function: To detect the area of the person located , adjust the wind direction, evade blow to the
people directly.If detected three or more people in the area, the right& left swing will be auto swing.
No matter of to setting follow or evade, judging the Area of the people located and then to adjusted wind
requires a certain delay time, so the wind direction will not change immediately.
In Follow/Evade mode, if a long time (20 minutes or more) people can not be detected , the unit will be
automatically in power-saving mode. The frequency will be reduced gradually, and fan will be in low speed.
Once detected people, the unit will be exit the power saving mode.
In Follow/Evade mode, the unit real-time detection of human activity,according to the amount of activity to
control the frequency and the fan speed. In heating mode, the greater of amount of activity, the lower
frequency and fan speed. And when the activity less, the frequency will be increase and fan speed increasing.
In cooling mode, conversely.
If the human sensor running abnormal, please check that if the structure deformed or installed in place. if
OK, then check that if the terminal between human sensor module and the PCB connected well. if OK,
using multimeter to test the harness which connect the human sensor and the processing board is normal or
not .If OK, then replace the module or PCB.
19
Functions and control
Domestic air conditioner