Hisense AS-09UR4SVNVG1 (UP1), Service Manual

5

5

.

.

C

C

O

O

N

N

T

T

R

R

O

O

L

L

M

M

O

O

D

D

E

E

L

L

 22

in room temperatures.      

T

room

-T

set

Indoor fan speed 

T

room

-T

set

≤

2

0

C 

Low 

2

0

C 

<

T

room

-T

set

<

4

0

C 

Medium 

T

room

-T

set

≥

4

0

C 

High 

5-3-7-4 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.   

5-3-7-5  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.           

5-3-8 Heating-run mode 

5-3-8-1 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. 

5-3-8-2 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

set

-T

room

Indoor Fan Speed 

T

set

-T

room

≤

2

0

C 

Low 

2

0

C 

<

T

set

-T

room

<

4

0

C 

Medium 

T

set

-T

room

≥

4

0

C 

High 

5-3-8-3 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. 

5-3-8-4 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 23

0

C, but for 30 seconds at the latest.