Cooling-Run Mode; Temperature Compensation; Outdoor Fan; Indoor Fan - Hisense AS-09UR4SVNVG1 Service Manual

6 . C O N T R O L M
6 . C O N T R O L M
6-3-6-2 Cooling→heating turnover operation
Cooling→heating: the compressor stops; 50 s later the 4-way valve is
activated and 3 minutes more the compressor turns on.
Heating→cooling: the compressor stops, 50 s later the 4-way valve is
interrupted and 3 minutes more the compressor turns on.
6-3-6-3 There is temperature compensation during the auto-run, which
is same as cooling and heating.

6-3-7 Cooling-run mode

5-3-7-1 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.

6-3-7-2 Outdoor Fan

The outdoor fan's speeds are divided into two levels which can be
changed over according to outdoor ambient temperatures.
When operating at a fixed frequency, the outdoor fan is forced to operate
at the high speed.

6-3-7-3 Indoor fan

When the fan speed is set at the high, medium and low fan speeds, the
fan runs at a preset speed. When the fan speed setting is automatic, the
fan speed is set based on the difference in room temperatures.
T
0
2 C <T
T
6-3-7-4 Prevention against condensation and insufficient heat exchange
at the low indoor fan speed.
When the indoor fan speed is set at the low fan speed, the compressor's
power is restricted as in the low temperature cooling.
6-3-7-5 4-way valve
State: It is interrupted in cooling.
Switchover: When initially powered on for cooling, the 4-way valve is
interrupted immediately.
When the heating is changed to the cooling, it needs an interval of 50
seconds for the 4-way valve to change over from being activated to being
interrupted.
O D E
O D E
T -T
room set
0
-T ≤2 C
room set
0
-T <4 C
room set
0
-T ≥4 C
room set
Indoor fan speed
Low
Medium
High