Emergent Switch; Perform 2 Seconds Later; Fresh Air Function; Indoor Unit Number Setting - Haier H-MRV Series Service Manual

Timer OFF: When startup, timer LED is on, when timer is over, the timer LED is off and meanwhile,
the unit stops.
Timer ON/OFF: When both of TIMER ON/OFF be set, timer LED is on.

5.3 Emergent switch

For some remote control type unit, there is an emergent switch. If the unit is off, press the switch and the
indoor unit will run in Auto mode at 24℃; if the unit is on, press it and then the unit will stop.

5.4 Perform 2 seconds later

To avoid the frequent response after receiving signal, the unit will enter the corresponding request 2
seconds later, except for the air gate control.

5.5 Fresh air function

When the unit receives the fresh air signal, there is display on LED plate. Only when indoor fan motor has
output, the chip can drive the fresh air circuit; if there is no output from indoor motor, fresh air has not
output, but the LED still displays.
5.6 Indoor motor alarm
If indoor motor can not check the pulse in 10 seconds after being powered on, the system will close the
output voltage to indoor motor. After being standby for 30 seconds, electrify the motor again, if in 10
seconds, there is no fan motor pulse, the system will send out alarm, meanwhile, timer LED flashes at 2Hz
frequency, 3-second interval.

5.7 Indoor unit number setting

If indoor units have not group number and unit number, indoor power LED, run LED, and timer LED
flash together at 2Hz frequency, 3-second interval.
When indoor unit receives the set group number signal from outdoor, if the outdoor group number is
different from the indoor previous group No., the previous No. and unit No. will be cancelled, the
group No from outdoor will be saved in this indoor EEPROM, meanwhile, indoor power LED, run
LED, and timer LED will flash together at 2Hz frequency, 3-second interval, waiting for setting unit
number.
In indoor unit has not group number, it will not receive the unit number.
When indoor receives the setting unit number signal from address set controler, power LED, run
LED, and timer LED will stop flash at the same time, that shows indoor unit has received the set unit
number. If pressing "CHECK" button on adddress set controller, you can check the unit number.
The power LED flash times stand for the unit number. For example, the set unit number is 5, the
power LED flashes 5 times at 2 Hz frequency, 3-second interval.
If indoor unit receives the lock command from outdoor, the unit number can not be set. When
receiving the setting unit number signal, two times of "dudu" sound shows that the unit has refused
to be set unit number.
When setting unit number, if there is repeated number, two times of "dudu" shows re-setting unit
number.
When setting unit number, avoid setting number towards mutiple indoor units. Thus you can not
check if there is repeated number, which will affect the normal communication.
When setting unit number, the time interval is better more than 10 seconds, in order to check the
repeated numbers.
When setting unit number, please set the number at a certain order, to avoid the repeated number.
The address set controller: emission distance is 1 meter, two sets of 5# batteries, static current is
5uA.
>a__WcU[S^ <[c >a`V[e[a`Wc
-108-