Haier AU122AEERA Service Manual page 35

ambient temperature, and 3 minutes later, the unit will adjust according to the outdoor ambient
temperature and compressor running frequency.
Fan speed chart in 3 minutes after compressor starts up:
Ambient temp.
Cool
heat
Fan speed chart in 3 minutes after compressor runs due to the ambient temp. and compressor
frequency:
Compressor frequency in cooling
Twh Over 28℃
Below 28℃
Compressor frequency in heating
Twh Over 15℃
Below 15℃
Low temp. cooling mode:
●
Outdoor temp. To
DC fan speed
Rated running mode:
●
Outdoor fan motor runs in class-7(DC motor) in rated mode.
1.2.4 Fan motor speed control when outdoor select inverter moter
Select fan motor by SW4 on the outdoor small indicate board, ON means DC motor, OFF means
inverter motor.
Blowing remain heat function: In cooling mode, when compressor shuts off, outdoor motor will run in
low speed, and will shut off after 30 seconds.
Fan speed chart in 3 minutes after compressor starts up:
Ambient temp.
Cool
Ambient temp.
heat
Fan speed chart in 3 minutes after compressor runs due to the ambient temp. and compressor
frequency:
Compressor frequency in cooling
Twh Over 28℃
Below 28℃
Compressor frequency in heating
Over 15℃
Twh
Below 15℃
Remark: 1. There are 45 seconds delay when changing fan speed;
2. When in non-heating mode, if outdoor ambient temp. is lower than 15℃, the fan will run in low
speed;
3. When in heating mode, if outdoor ambient temp. is lower than 20℃, the fan will run in low
speed.
1.3 Outdoor electronic expansion valve (EEV) control
1.3.1 Movement of EEV
Full-close, full-open, open angle upper limitation , open angle lower limitation , open/close valve speed.
Commercial Air Conditioner
~10
Class-3
Class-6
F<40Hz
Class-3
Class-1
F<40Hz
Class-1
Class-3
To <0 0≤To <5
Class-1 Class-2
~15
Low speed
~10
High speed
Model: AU122AEERA AB122ACERA
10~25
Class-5
Class-5
40Hz≤F<50Hz
Class-5
Class-3
40Hz≤F<50Hz
Class-3
Class-5
5≤To <10
Class-3
15~25
High speed
10~20
High speed
~25 25~45
Low speed High speed
Low speed Low speed
~25 25~45
Low speed Low speed
Low speed High speed
35
AC122ACERA AD122ALERA
25~
Class-6
Class-3
50≤F
Class-6
Class-5
50≤F
Class-4
Class-6
10≤To <15
Class-4
25~
High speed
20~
Low speed
45~
High speed
High speed
45~
High speed
High speed