Doosan DX225LC, Manual

Page: 102 / 136

Electrical System
Page 101
SP000935
Sensor
compensation Set temperature
Internal air temperature
sensor
Ambient air temperature
sensor
Water temperature sensor
1. In case of sensor failure, following defaults are applied:
Internal air temperature sensor: 25°C, Ambient air
temperature sensor: 25°C, Duct sensor: -2°C
Temperature control actuator:
- Set Temperature 17 - 24.5°C: Max cooling, Set
Temperature 25 - 32°C: Max heating
Wind direction mode actuator
- VENT: VENT fix, modes other than VENT: Fixed to DEF
* Sun sensor is not compensated.
Max cooling/
heating control Auto Setting 1. Set Temperature 32°C: Max heating
2. Set Temperature 17°C: Max cooling
* Max cooling/heating control is possible only in Auto mode.
Starting
Control of
Cooling Auto mode
Duct sensor
1. Prevention of discharge of hot air before discharge
temperature drops enough in hot summer weather
2. Start conditions (AND condition)
(1) A/C on (AUTO or manual)
(2) Temperature sensed by the duct sensor is above 30°C
(3) Airflow: Auto mode
3. One time control in the cycle of engine OFF
o
engine run
4. Initial cooling control is executed when the Auto switch is
"ON" in the manual status (A/C "OFF" and manual control
of airflow) in 5 seconds after engine run.
5. Initial cooling control should be before max cooling.
6. Release condition (OR condition)
(1) A/C "OFF"
(2) Airflow: Manual control
(3) Release is possible with the "OFF" switch but not
allowed within 12 seconds (after Start "ON") while the
system is off using the "OFF" switch and during the time of
initial cooling control.
Categories Inputs System Operation
Max Cooling (17 C) Max Heating (32 C)
Temp Control
Actuator
Air Flow
Compressor
Intake/Recircle
Wind Direction Mode
FULL COOL FULL HOT
MAX HI AUTO HI
Forced ON OFF
Recircle Intake
VENT FOOT