Haier 2U14CS1ERA - Page 28

2U14CS1ERA-SM Functions and control
25
Domestic Air Conditioner
seconds).
5.2.2.1
˖
The outdoor fan control when refrigerating or dehumidifying
After the compressor is started for 5 seconds, the outdoor fan is started at the medium speed at
first, after 30 seconds,it begins to control the airflow speed according to the temperature
conditions of the outdoor environment.
5.2.2.2
˖
The outdoor fan control when heating
The temperature of the outdoor
air ˄Ta˅
Airflow speed
Ta22ć
Low
19ćTa< 2 2ć
Keeping the speed
16ćTa< 2 2ć
Medium
14ćTa< 1 6ć
Keeping the speed
Ta< 14ć
High
5.2.3˖The control of the outdoor electronic expansion valve
When starting the compressor: the opening size of the valve must be guaranteed to have entered
into the standard opening size, and then the compressor can be started.
When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation),
the opening size of the expansion valve of the indoor unit is 5 steps;
When heating is in vain, the opening size of the expansion valve of the indoor unit is 55 steps;
When the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then
begin initialization.
The scope of refrigerationg valve 90-----480 steps
The scope of heating valve 80-----480 steps
The valves are adjusted according to the degree of superheat üSHaˈƸSHa.
5.2.4˖Four way control
For the details of defrosting four-way valve control, see the defrosting process.
Four way working in other ways:
Under the mode of heating, open the four-way valve, when the compressor is not started or
changed to non-heating mode, make sure the compressor is stoped for 2 minutes, and then
The temperature of the
outdoor air ˄Ta ˅
The temperature of the outdoor
coil˄Te˅
Airflow speed
Ta30ćüü
High
26ćTa< 3 0ćüü
Keeping the speed
24ćTa< 2 6ćüü
Medium
23ćTa< 2 4ćüü
Keeping the speed
5ćTa< 23ćüü
Low
Ta< 5ć 15ćTe
Low
15ć>Te
Stop