Haier AP48KN1EAA - Page 34

Single Split
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the compulsory cooling signal from 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.
(5) Water level inspection and water pump control
a. 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;
b. In standby state of cooling mode, heating mode and fan mode, after water tank is full, the oat
switch will disconnect, if the controller detects this signal for 2 seconds, the water pump will begin to
work. After the oat resets, water pump will continue working and stops 5 minutes later;
c. 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 oat resets, the water
pump will stop 5 minutes later; if water pump has repeated for 4 cycles and the oat can not reset,
and the unit will alarm water drainage abnormal, and the water pump will continue the cycle.
(6) Time shorting function
If the time shorting port is in short circuit for 2 seconds after conditioner being electried, the buzzer
will sound once and enter time shorting operation, the unit will perform a 1/60 time shorting control.
(7) Auto-restart function
In 5 seconds press the SLEEP button for 10 times, the buzzer sounds 4 times, that is set as auto-
restart mode, if shutoff and power again, the system will run in the original state before been shutoff.
The following information will be memorized: ON/OFF, running mode (AUTO, HEAT, COOL, DRY,
FAN), fan speed (AUTO, MANUAL(HIGH, MED, LOW)), the set temperature (16
℃
-30
℃
) and
HEALTH, while the louver position, TIMER, SLEEP and CLOCK will not be memorized. Press
SLEEP button 10 times again, the buzzer will sound 2 times and auto-restart function is cancelled.
(8) Auto check function
Short connect the emergency switch before being electried, after being electried, 10 seconds later,
it will enter auto-check circuit. Before auto-check, please ensure the input values (sensor, pressure
switch) normal, or the buzzer will sound 5 times to show there is abnormal; all the ports will output
as the following sequence: run lamp-timer lamp-electric heater-water pump/pump lamp-compressor/
compressor lamp-(outdoor motor-4-way valve) –HIGH speed-MED speed-LOW speed-swing-
HEALTH ; after the auto-check is nished, the buzzer sounds once.
3.8 System protection
(1) 3-minute protection for compressor startup
After the compressor stops, at least 3 minutes later, the compressor can restart up; if the unit is
powered off in running, after being electried, 3 minutes later, the compressor can restart up. Being
electried for the rst time, there is 3-minute delay protection.
(2) Anti-current rush
2 seconds later after compressor is running, outdoor motor can work.
(3) Sensor failure