Haier 1U18FS2ERA - Protection Function

Domestic Air Conditioner
23
5.2.2.2˖The outdoor fan control when heating
The temperature of the outdoor
air ˄Ta˅
Airflow speed
Ta22ć
Low
19ćTa<22ć
Keeping the speed
16ćTa<22ć
Medium
14ćTa<16ć
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 60-----480 steps
The valves are adjusted according to the degree of superheat —SHaˈƸSHa.
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 close the four-way
valve.
5.2.5 ˖Protection function
The temperature of the
outdoor air ˄Ta˅
The temperature of the outdoor
coil˄Te˅
Airflow speed
Ta30ć
—— High
26ćTa<30ć
—— Keeping the speed
24ćTa<26ć
—— Medium
23ćTa<24ć
—— Keeping the speed
10ćTa<23ć
—— Low
5ćTa<10ć
—— Low
Ta<5ć 15ćTe
Low
15ć>Te
Stop
Funcitions and Control