Hyundai HSH-121NBE, Service Manual

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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
and it is not available when it is subject to the sensor on the remote controller.
5-3-7-2 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.
5-3-7-3 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
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).
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