Haier AS71S2SF1FA-BC Service Manual page 22

7.1.16 Single indoor system operation
* Enter condition: First, set the high speed airflow and 30 centigrade set temperature, then press the
dormant keys for 6 times within 7 seconds, the system will feedback with 6 rings.
* After the system enters the separate indoor system operation mode, the indoor system will operate
according to the set mode and neglect the communication signals of the outdoor system. However, it
has to send signals to the outdoor system.
* Quitting condition: This mode can be quitted after receiving the quitting signal from the remote control
or urgency system. The indoor system thus can quit the single operation mode.
7.1.17 Power cut compensation
* Entering condition: Press dormant button 10 times within 7 second, the buzzer will ring 4 times and the
present system status will be stored into the EEPROM of the indoor system.
* After entering the power cut compensation mode, the processing of the indoor system should be as
the followings:
Remote control urgency signal: operate according to the remote control and the urgent conditions, the
present status will be stored into the EEPROM of the indoor system.
* Quitting conditions: Press dormant button 10 times within 7 seconds and the buzzer will ring twice.
7.1.18 Test program
First, connect the test program terminal on the mainboard. Then connect the system to the power circuit.
The test program will operate as follows.
HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5
second— the violet is sent for 0.5-- the background light turns to white—the back ground light turns to
white—the background light turns to white—the background light is fully lighted for 0.5 second—LED
screen lights for 0.5 second— the step-in motor fully output for 0.5 second—then the motor doesn't
output for 0.5 second—the motor fully output again for 0.5 second. The test program finishes.
7.1.19 Time cutting function:
Connect the test program terminal on the mainboard after connecting the system to the power circuit.
The CPU of the main control will be 60 times faster.
7.1.20 Room card function:
1、If the SW2 code chooses the room card is invalid(SW2_2 is OFF), the remote control, wire control,
long-range control, room card (closed is on, disconnect is off) are effective.
2、If the SW2 code chooses the room card is valid(SW2_2 is ON), you need to insert the room card
first.And then received the start signal of remote control, or wire control, or long-range control, the
machine can run.
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Functions and Control
Domestic air conditioner