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4.3.3 Cold air prevention
In the heating-run, to prevent the indoor fan from blowing cold air, the indoor fan
speed is controlled as illustrated below:
Down
4.3.4 Residual heat blowing off
When the compressor is turned off in the heating run, the indoor fan does not stop at
once, continue running for 30 seconds at last.
4.3.5 Outdoor fan
The outdoor fan speeds are divided into three levels which can be changed over
according to outdoor ambient temperatures.
4.3.6 4-way valve
State: It is electrified in heating.
Switchover: When initially powered on for heating, the 4-way valve is activated
immediately.
In the change from cooling to heating, it needs an interval of 50 seconds for the
4-way valve to change over from being interrupted to being activated.
4.3.7 Overload control
4.3.7.1 Conditions for the system to be interrupted on overload: When the indoor heat
exchanger temperature is higher than or equal to the Interrupting Temperature for
Overload Protection 65℃, and maintains for 10 s, the overload control is activated to
interrupt the system.
Action of the overload interruption: The compressor is interrupted, the outdoor fan
stops and the indoor fan keeps running or operates for cold air prevention.
Conditions for overload interruption lift: When the indoor heat exchanger temperature
drops below the Temperature for Overload Protection Lift 47℃, the overload control
M
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35℃
Set fan speed
30℃
ultra-low speed
25℃
stop
A
A
Indoor Fan Speed
Low
Medium
High
Set fan speed
low fan speed
stop
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