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10

Operation and Performance

*Heating Performance

*Microcomputer-controlled Automatic Defrosting

Heat-pump air conditioners heat your entire room

by recirculating air throughout the room, with the

result that some time may be required after first

starting the air conditioner until the room is heated.

This air conditioner operates on the heat-pump

principle, absorbing heat from outdoor air and

transferring that heat indoors. As a result, the

operating performance is reduced as outdoor air

temperature drops. If you feel that insufficient

heating perfomance is being produced, we

recommend you use this air conditioner in

conjunction with another kind of heating

appliance.

Instructions relating to heating (*) are applicable
only to "HEAT & COOL TYPE".

When using the Heating mode under conditions of
low outdoor air temperature high humidity, frost
may form on the outdoor unit, resulting in reduced
operating performance.

In order to prevent this kind of reduced
performance, this unit is equipped with a
Microcomputer-controlled Automatic Defrosting
function. If frost forms, the air conditioner will
temporarily stop, and the defrosting circuit will
operate briefly (for about 7 to 15 minutes).

During Automatic Defrosting operation, the
OPERATION Indicator Lamp will flash.

*Trouble alarming performance

During operation, when there is any trouble,
the power indicator lamp will flash.

Operation Tips

Temperature and Humidity Range

If the air conditioner is used under higher temperature condition than those listed, the built-in protection
circuit may operate to prevent internal circuit damage. Also, during Cooling and Dry modes, if the unit is
used under conditions of lower temperature than those listed above, the heat-exchanger may freeze, leading
to water leakage and other damage.
Do not use this unit for any other purposes except for the Cooling, (*) Heating, Dehumidifying, and air-
circulation of rooms in ordinary dwellings.
The wiring method should be in line with the local wiring standand.
The waste battery should be disposed properly.
If the fuse on PC board is broken, please change it with the type T 3.15A/250VAC.

Cooling

Heating

Indoor

outdoor

Rated    Maximum   Minimum
  27              32               18
  19              23               14
  35              43               10
  24              26                 6
  20              27               15
 14.5             --                 --
   7               24                -7
   6               18                 --

DB  C
WB  C
DB  C
WB  C

Indoor

outdoor

DB  C
WB  C

DB  C
WB  C

Summary of Contents for HCFU-18CF03

Page 1: ...HCFU 18CF03 HCFU 18HF03 HCFU 28CF03 HCFU 28HF03 EXPOSED CEILING FLOOR MOUNTING AIR CONDITIONER CONVERTIBLE CEILING FLOOR MOUNTING Please read this operation manual before using the air conditioner Pl...

Page 2: ...Contents Cautions Safety Precautions Features and Functions Name of Parts Cleaning and Care Trouble Shooting Operation Tips Installation of Indoor Unit 1 2 3 4 5 6 7 8 9 10 11 23...

Page 3: ...the environment The cardboard box may be broken or cut into smaller pieces and given to a waste paper disposal service The wrapping bag made of polyethylene and the polyethylene foam pads contain no...

Page 4: ...e of danger for the user of the air conditoiner Do not damage any parts of the air conditioner that carry refrigerant by piercing or perforating the air conditioner s tubes with sharp or pointed items...

Page 5: ...plants in the direct path of the air flow Do not drink the water drained from the air conditioner Do not use in applications involving the storage of foods plants or animals precision equipment or art...

Page 6: ...eration When the set time is reached the unit automatically turns off HEAT COOL TYPE When the SLEEP button is pressed during Heating mode the air conditioner s thermostat setting gradually lowers duri...

Page 7: ...amp 5 OPERATION Indicator Lamp 6 TIMER Indicator Lamp 7 Compressor Run Lamp 8 Intake Grill Fig 3 9 Air Filter 10 UP DOWN Air Direction Flaps 11 RIGHT LEFT Air Direction Louvers behind UP DOWN Air Dire...

Page 8: ...ng them After washing allow the Air Filters to dry thoroughly in an area protected from sunlight 1 2 3 The Filters fit onto the inside of the intake Grill figure 1 The bottom edges of the Air Filters...

Page 9: ...horoughly in an area protected from sunlight 4 Re attach the air filters to the Intake Grill press the two buttons on the filters until you hear a sound of click When used for extended periods the uni...

Page 10: ...by the casing expanding or shrinking because of temperature changes This is because the system circulates smells from the interior air such as the smell of cigarettes or the painting on the furniture...

Page 11: ...checks or following problems occur please stop it immediately and contact your dealer Fuses or circuit breakers often blow out Water comes out in cooling dry operation Operation is abnormal or sound i...

Page 12: ...ting function If frost forms the air conditioner will temporarily stop and the defrosting circuit will operate briefly for about 7 to 15 minutes During Automatic Defrosting operation the OPERATION Ind...

Page 13: ...high salt content in the air c Near to hot spring with high content of sulfide gases d Area with frequent fluctuation of voltage e g factory etc e In vehicles or ships f Kitchen with heavy oil vapour...

Page 14: ...ith national wiring standards by authorized personnel only 4 Never cut the power cord lengthen or shorten the cord or change the plug 5 Also do not use an extension cord 6 Plug in the power cord plug...

Page 15: ...t the most appropriate installation order For series 28 there is no power plug A FLOOR CONSOLE TYPE 1 DRILLING FOR PIPING Select piping and drain directions Fig 2 The piping and drain can be made in t...

Page 16: ...g 9 Fig 5 Wrap the insulation drain hose around the drain hose connection Fig 7 Fig 7 Wall 10cm 6mm Indoor unit outdoor unit Fig 4 When installing set to wall install the accessory wall bracket at the...

Page 17: ...ns are selected drill 80mm and 50mm or 150mm dia hole on the wall so that the hole is tilted downward toward the outdoor for smooth water flow With a concrete drill drill four 12 7 mm dia Holes Fig 12...

Page 18: ...es Fig 16 Bolt Bracket Indoor unit 5 INSTALL THE DRAIN HOSE Select whether the drain hose will be connected to the left or right side Fig 3 Insert the drain hose into the drain pan then secure the dra...

Page 19: ...ON After connecting the piping check the joints for gas leakage with gas leakage detector HOW TO CONNECT WIRING TO THE TERMINALS A For solid core wiring or F cable Fig 19A 1 Cut the wire with a wire c...

Page 20: ...eplace and tighten the terminal screw using a screw driver 18 After passing the connection cord and power cable through the insulation tube fasten it with the cord clamp as shown in Fig 20 HOW TO FIXE...

Page 21: ...onnect the connection cords firmly to the terminal block Imperfect installation may cause a fire 3 Always fasten the outside covering of the connection cord with the cord clamp If the insulator is cha...

Page 22: ...ve the four tapping screws CAUTION Do not remove the screws If the screws are removed the electric component box will fall Electric component box Base Electric component box cover Remove the three tap...

Page 23: ...ce of at least 3mm between the contacts of each pole 4 Perform wiring work in accordance with standards so that the room air conditioner can be operated safely and positively 5 Install a leakage circu...

Page 24: ...low and the air conditioner is difficult to start contact the power company the voltage raised CAUTION CUSTOMER GUIDANCE Explain the following to the customer in accordance with the operating manual 1...

Page 25: ...sert the hinges on the bottom of the intake grill into the holes in the base assembly Then mount the arms to the three areas on the top of the intake grill Fig 29 1 Cut the right side of the intake gr...

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