Service Manual
23
2. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator pip-
ing temperature will be reached at 25°C.
Compact and light design
• To install a unit is very convenient because of smaller
size than textile.
Low noise
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
Long life filter
• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.
High head Drain pump
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional)
Swirl Swing Control
• It is operating individually or totally by central control function.
• It is operating swirl swing
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• Jet, High, Med, Low, Lolow
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-
matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Functions
Summary of Contents for ARNU Series
Page 13: ...Service Manual 13 External Appearance 2 2 Outdoor Units ARUN1008F20 10HP ...
Page 16: ...16 ...
Page 17: ...Service Manual 17 Indoor Units ...
Page 18: ...18 Indoor Unit ...
Page 30: ...30 Indoor Unit ...
Page 44: ...44 Indoor Unit ...
Page 79: ...Service Manual 79 Outdoor unit ...
Page 88: ...88 Outdoor Unit 5 Wiring Diagrams Wiring Diagrams ...
Page 112: ...112 Outdoor Unit ...
Page 113: ...Service Manual 113 Trouble shooting guide ...
Page 137: ...Service Manual 137 Troubleshooting Guide Resistance measure between phases of compressor ...
Page 142: ...Troubleshooting Guide 142 Outdoor Unit Connector of reactor Connectors of 3phase diode ...
Page 143: ...Service Manual 143 Troubleshooting Guide Connectors of capacitor Check IPM PCB ...
Page 150: ...Troubleshooting Guide 150 Outdoor Unit Pressure switch CHECK VALVE ...
Page 152: ...Troubleshooting Guide 152 Outdoor Unit Measure power input of outdoor unit ...
Page 153: ...Service Manual 153 Troubleshooting Guide Measure power input of outdoor unit ...
Page 156: ...Troubleshooting Guide 156 Outdoor Unit Liquid injection by pass valve ...
Page 157: ...Service Manual 157 Troubleshooting Guide Measure resistance of LEV coil ...
Page 158: ...Troubleshooting Guide 158 Outdoor Unit Heater ...
Page 168: ...Troubleshooting Guide 168 Outdoor Unit Measure input power of outdoor unit ...
Page 172: ...Troubleshooting Guide 172 Outdoor Unit Check main fuse of out door unit ...
Page 176: ...Troubleshooting Guide 176 Outdoor Unit Fan IPM ...
Page 178: ...Troubleshooting Guide 178 Outdoor Unit Measure input power of fan main PCB ...
Page 183: ...Service Manual 183 Exploded View Replacement Parts List ...