Haier AC242ACEAA [315/408] Electric control functions

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

auto-restart mode, if shutoff and power again, the system will run in the original state before been

shuttoff. 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 (16ć-30ć) 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.

3.7.8 Auto check function

Short connect the emergency switch before being electrifed, after being electrified, 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 finished, the buzzer sounds once.

3.8 System protection

3.8.1 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 electrified, 3 minutes later, the compressor can restart up. Being

electrifed for the first time, there is 3-minute delay protection.

3.8.2 Anti-current rush

2 seconds later after compressor is running, outdoor motor can work.

3.8.3 Sensor failure

circuit, short circuit or close to short circuit for 2 minutes continuously, the mainboard will confirm

that sensor is failure, the system will stop running, alarm occurs; If the signal is resumed, the system

will resume automatically.

Shield indoor coil temperature sensor failure in 3 minutes before compressor start and dring defrost

procedure(include defrost finish and quit).

Indoor ambient/coil/outdoor defrost temperature sensor: Mainboard checks that the sensor is in open

Electric control functions

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