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4

4

No problem

Abnormal noise during operation

Power plug / cord become unnaturally warm

press

search code

if 4x beep

* Emergency operation

(limited function)

* 1. Press MODE - 2. Select COOL/HEAT - 3. Press OFF/ON

  TIMER 

flashes

Circuit breaker switches off frequently

Switches / buttons do not operate properly

Water leak from Indoor Unit

Water / foreign particles have entered the
Remote Control

In case of...

CALL authorized distributor

TURN OFF/UNPLUG

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Immediately isolate from the mains supply (e.g. if there is a
smell of burning) 

Cooling

Air circulation

Dehumidifying

Heating

NEVER use this unit for purposes other than those
listed in these Operating Instructions. In particular,
do not use it for the preservation of food.

NEVER install, remove or
reinstall yourself

NOT in potentially explosive
atmosphere

Engage dealer /
specialist

Connect drain hose
properly

Engage dealer / specialist for mains connection including...

NEVER shared

Used connectors / breakers
easy reachable!

Plug in properly

Connect protective earth!

Do NOT operate with wet hands

Do NOT stay long in the stream of cold air

NEVER use the plug to switch on/off

Ventilate the room periodically

Do NOT pull out the plug by the cable

Place nothing on the unit --> covered openings may cause
overheating

Do NOT insert finger or other objects into the unit! --> especia
dangerous for children!

Unused for a long time? --> OFF / unplug

If the supply cord is damaged or needed to be replaced, it must be
replaced by the manufacturer or its service agent or a similarly
qualified person in order to avoid a hazard. 

NEVER modify / damage mains cables / connectors

Before operating, read the safety
precautions thoroughly

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Defect / suspicion of defect? —> Attend defects before use!

Do NOT repair yourself

Engage dealer / specialist

OFF and unplug (connector or breaker)

Do NOT wash!

Uninstalling and disposal of the unit ONLY by dealer /
specialist

Packaging recyclable

Indoor Unit

Outdoor Unit

Temperature

Wet Bulb

Dry Bulb

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 1. Converting air conditioners to R410A

Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a
destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been
taken around the world to prevent this destruction.
The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, therefore, possesses this ozone-
destroying potential. International regulations (the Montreal Protocol on Ozone-Damaging Substances) and the domestic laws
of various countries call for the early substitution of R22 by a refrigerant which will not harm the ozone layer.

  • In ACs, the HFC refrigerant which has become the mainstream alternative is called R410A.Compared with R22, the

pressure of R410A is approximately 1.6 times as high at the same refrigerant temperature, but the energy efficiency is about
the same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HFC refrigerant. Another typical HFC
refrigerant is R407C. While the energy efficiency of R407C is somewhat inferior to that of R410A, it offers the advantage
of having pressure characteristics which are about the same as those of R22, and is used mainly in packaged ACs.

 2. The characteristics of HFC (R410A) refrigerants

 a. Chemical characteristics

The chemical characteristics of R410A are similar to those of R22 in that both are chemically stable, non-flammable
refrigerants with low toxicity.
However, just like R22, the specific gravity of R410A gas is heavier than that of air. Because of this, it can cause an oxygen
deficiency if it leaks into a closed room since it collects in the lower area of the room. It also generates toxic gas when it is
directly exposed to a flame, so it must be used in a well ventilated environment where it will not collect.

Table 1 Physical comparison of R410A and R22

R410A

R22

Composition (wt%)

R32/R125 (50/50)

R22 (100)

Boiling point (°C)

-51.4

-40.8

Vaporizing pressure (25°C)

1.56 Mpa (15.9 kgf/cm

2

)

0.94 Mpa (9.6 kgf/cm

2

)

Saturated vapor density

64.0 kg/m

3

44.4 kg/m

3

Flammability

Non-flammable

Non-flammable

Ozone-destroying point (ODP)

0

0.055

Global-warming point (GWP)

1730

1700

 b. Compositional change (pseudo-azeotropic characteristics)

R410A is a pseudo-azeotropic mixture comprising the two components R32 and R125. Multi-component refrigerants with
these chemical characteristics exhibit little compositional change even from phase changes due to vaporization (or
condensation), which means that there is little change in the circulating refrigerant composition even when the refrigerant
leaks from the gaseous section of the piping.
Accordingly, R410A can be handled in almost the same manner as the single-component refrigerant R22. However, when
charging, because there is a slight change in composition between the gas phase and the liquid phase inside a cylinder or
other container, charging should basically begin with the liquid side.

 c. 

Pressure characteristics
As seen in Table 2, the gas pressure of R410A is approximately 1.6 times as high as that of R22 at the same refrigerant
temperature, which means that special R410A tools and materials with high-pressure specifications must be used for all
refrigerant piping work and servicing.

Table 2 Comparison of R410A and R22 saturated vapor density

Unit: MPa

Refrigerant Temperature (°C)

R410A

R22

-20

0.30

0.14

0

0.70

0.40

20

1.35

0.81

40

2.32

1.43

60

3.73

2.33

65

4.15

2.60

48