Heating-Run Mode; Cold Air Prevention; Residual Heat Blowing Off; 4-Way Valve - Hisense AS-09UR4SVNVG1 Service Manual

6 . C O N T R O L M
6 . C O N T R O L M

6-3-8 Heating-run mode

6-3-8-1 Temperature compensation
Principle for compensation: The compensation is available only if the
proper sensor is used and it is not available when it is subject to the
sensor on the remote controller or line controller.
6-3-8-2 Indoor fan
The fan speed is set at the high, medium or low fan speed, it operates at
a preset speed (in the cold air prevention, it is forced to run at the
ultra-low flowrate or stop).
When the fan speed is set in the auto-run, the fan speed setting is made
according to the room temperature differences (except for the cold air
prevention).
T
0
2 C <T
T

6-3-8-3 Cold air prevention

In the heating-run, to prevent the indoor fan from blowing cold air, the
indoor fan speed is different from the set speed after turning on
air-conditioner.

6-3-8-4 Residual heat blowing off

When the compressor is turned off in the heating run, the indoor fan does
not stop at once, but until the indoor evaporator temperature is below
0
23 C, but for 30 seconds at the latest.
6-3-8-5 Outdoor fan
The outdoor fan speeds are divided into three levels which can be
changed over according to outdoor ambient temperatures.

6-3-8-6 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.
O D E
O D E
T -T
set room
0
-T ≤2 C
set room
0
-T <4 C
set room
0
-T ≥4 C
set room
Indoor Fan Speed
Low
Medium
High