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Room Air Conditioner

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BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

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ONLY FOR AUTHORIZED SERVICE PERSONNEL.

E-MAIL

Functions .................................................................................................................................3

Product Specification (Cooling & Heating)...........................................................................6

Dimensions ..............................................................................................................................7

Refrigeration Cycle Diagram ..................................................................................................9

Wiring Diagram......................................................................................................................10

Operation Details ..................................................................................................................12

Installation .............................................................................................................................27

Operation ...............................................................................................................................41

Disassembly of the parts (Indoor Unit) ...............................................................................42

2-way, 3-way Valve.................................................................................................................45

Cycle Troubleshooting Guide...............................................................................................52

Self-diagnosis function.........................................................................................................53

Electronic Parts Troubleshooting Guide.............................................................................55

Electronic Control Device.....................................................................................................66

Schematic Diagram ...............................................................................................................72

Exploded View and Replacement Parts List.......................................................................77

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• Room temperature sensor. (Thermistor)
• Pipe temperature sensor. (Thermistor)

• Maintain the room temperature in accordance with the Setting Temp. 

• Indoor fan is delayed for 5 sec at the starting.

• Restarting is for approx. 2 minutes.

• Super High, High, Med, Low

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Defrost Mode (for Heating Model)

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), low(Heating) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation
• The fan speed is automatically switched from high to low speed. 

• The louver can be set at the desired position or swing 

up and down automatically. 

• Both the indoor and outdoor fan  stops

during defrosting.

• The indoor fan stops until the 

evaporator pipe temperature will be
reached at 30°C.

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• If power is on, it will operate to chage capacitor (330µF/450WV) on controller and power relay will oper-

ate after about 2~5sec.

• If outdoor temp. is below 0°C, preheater is operating for 1~5min.
• At the initial, It will be operated compressor after 1min. for preheating.

• The active power filter is designed to correct power factor(cos 

θ

) and to regulate DC link voltage.

• It will be operated PFC circuit when the compressor freq. is over 12Hz.
• If DC link voltage is not over DC 350V in 6 sec. in case of PFC on, it does not operating of compressor.

• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,

heat-sink temp., target freq., owing to CT.

• When the temp. of power module increases to 85°C, controller decreases Freq. of Comp.

• It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.

• It will be changed the drive voltage of comp. according to operating frequency.

• It is only operated in the heating operation mode except defrosting operation.

• High speed

- Although fan motor speed is low, it will change high speed in case of below AC193V, over 45°C of out-

door temp., and over fc, fh of comp. Freq.

• Low speed

- Nomal mode and over AC270V