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MSZ-FH25VE-E1
Инструкция по эксплуатации Страница: 13

Mitsubishi Electric MSZ-FH25VE-E1 [13/28] Hen you think that trouble has occurred

Mitsubishi Electric MSZ-FH35VE-E1 [13/28] Hen you think that trouble has occurred

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Even if these items are checked, when the unit does not recover from the

trouble, stop using the air conditioner and consult your dealer.

Symptom Explanation & Check points

Indoor Unit

The unit cannot be operated. • Is the breaker turned on?

• Is the power supply plug connected?

• Is the ON timer set? Page 9

The horizontal vane does not

move.

• Are the horizontal vane and the vertical vane

installed correctly?

• Is the fan guard deformed?

• When the breaker is turned on, the horizontal

vanes’ position will be reset in about a minute.

After the reset has completed, the normal hori-

zontal vanes’ operation resumes. The same is

true in the emergency cooling operation.

The unit cannot be operated for

about 3 minutes when restarted.

• This protects the unit according to instructions

from the microprocessor. Please wait.

Mist is discharged from the air

outlet of the indoor unit.

•

The cool air from the unit rapidly cools moisture

in the air inside the room, and it turns into mist.

The swing operation of the HORI-

ZONTAL VANE is suspended for a

while, then restarted.

• This is for the swing operation of the HORIZON-

TAL VANE to be performed normally.

When SWING is selected in

COOL/DRY/FAN mode, the

lower horizontal vane does not

move.

• It is normal that the lower horizontal vane does

not move when SWING is selected in COOL/

DRY/FAN mode.

The airﬂ ow direction changes

during operation.

The direction of the horizontal

vane cannot be adjusted with

the remote controller.

• When the unit is operated in COOL or DRY

mode, if the operation continues with air blowing

down for 0.5 to 1 hour, the direction of the airﬂ ow

is automatically set to horizontal position to

prevent water from condensing and dripping.

• In the heating operation, if the airﬂ ow tem-

perature is too low or when defrosting is being

done, the horizontal vane is automatically set

to horizontal position.

The operation stops for about

10 minutes in the heating

operation.

• Outdoor unit is in defrost.

Since this is completed in max.10 minutes,

please wait. (When the outside temperature is too

low and humidity is too high, frost is formed.)

The unit starts operation by

itself when the main power is

turned on, but hasn’t received

sign from the remote controller.

• These models are equipped with an auto

restart function. When the main power is

turned off without stopping the unit with the

remote controller and is turned on again, the

unit starts operation automatically in the same

mode as the one set with the remote control-

ler just before the shutoff of the main power.

Refer to “Auto restart function” page 6 .

The two horizontal vanes touch

each other. The horizontal

vanes are in an abnormal posi-

tion. The horizontal vanes do

not return to the correct “close

position”.

Perform one of the following:

•

Turn off and on the breaker. Make sure the horizon-

tal vanes move to the correct “close position”.

• Start and stop the emergency cooling operation

and make sure the horizontal vanes move to the

correct “close position”.

In COOL/DRY mode, when the

room temperature reaches near

the set temperature, the outdoor

unit stops, then the indoor unit

operates at low speed.

• When the room temperature deviates from the

set temperature, the indoor fan starts running

according to the settings on the remote control-

ler.

The indoor unit discolors over

time.

• Although plastic turns yellow due to the inﬂ uence

of some factors such as ultraviolet light and

temperature, this has no effect on the product

functions.

Multi system

The indoor unit which is not

operating becomes warm and a

sound, similar to water ﬂ owing,

is heard from the unit.

• A small amount of refrigerant continues to ﬂ ow

into the indoor unit even though it is not operat-

ing.

When heating operation is

selected, operation does not

start right away.

• When operation is started during defrosting of

outdoor unit is done, it takes a few minutes (max.

10 minutes) to blow out warm air.

Outdoor Unit

The fan of the outdoor unit does

not rotate even though the com-

pressor is running. Even if the

fan starts to rotate, it stops soon.

• When the outside temperature is low during

cooling operation, the fan operates intermittently

to maintain sufﬁ cient cooling capacity.

Water leaks from the outdoor

unit.

• During COOL and DRY operations, pipe or pipe

connecting sections are cooled and this causes

water to condense.

• In the heating operation, water condensed on

the heat exchanger drips down.

• In the heating operation, the defrosting operation

makes ice forming on the outdoor unit melt and

drip down.

White smoke is discharged from

the outdoor unit.

• In the heating operation, vapor generated by the

defrosting operation looks like white smoke.

Symptom Explanation & Check points

Remote controller

The display on the remote

controller does not appear or it

is dim. The indoor unit does not

respond to the remote control

signal.

• Are the batteries exhausted? Page 3

• Is the polarity (+, -) of the batteries correct?

Page 3

• Are any buttons on the remote controller of other

electric appliances being pressed?

Does not cool or heat

The room cannot be cooled or

heated sufﬁ ciently.

• Is the temperature setting appropriate?

Page 6

• Is the fan setting appropriate? Please change

fan speed to higher setting. Page 7

• Are the ﬁ lters clean? Page 11

• Is the fan or heat exchanger of the indoor unit

clean?

• Are there any obstacles blocking the air inlet or

outlet of the indoor or outdoor unit?

• Is a window or door open?

The room cannot be cooled

sufﬁ ciently.

• When a ventilation fan or a gas cooker is used

in a room, the cooling load increases, resulting

in an insufﬁ cient cooling effect.

• When the outside temperature is high, the cooling

effect may not be sufﬁ cient.

The room cannot be heated

sufﬁ ciently.

• When the outside temperature is low, the heating

effect may not be sufﬁ cient.

Air does not blow out soon in

the heating operation.

• Please wait as the unit is preparing to blow out

warm air.

Airﬂ ow

The air from the indoor unit

smells strange.

• Are the ﬁ lters clean? Page 11

• Is the fan or heat exchanger of the indoor unit

clean?

• The unit may suck in an odor adhering to the

wall, carpet, furniture, cloth, etc. and blow it out

with the air.

Sound

Cracking sound is heard. • This sound is generated by the expansion/con-

traction of the front panel, etc. due to change in

temperature.

“Burbling” sound is heard. • This sound is heard when the outside air is

absorbed from the drain hose by turning on the

range hood or the ventilation fan, making water

ﬂ owing in the drain hose to spout out.

This sound is also heard when the outside air

blows into the drain hose in case the outside

wind is strong.

Mechanical sound is heard

from the indoor unit.

• This is the switching sound in turning on/off the

fan or the compressor.

The sound of water ﬂ owing is

heard.

• This is the sound of refrigerant or condensed

water ﬂ owing in the unit.

Hissing sound is sometimes

heard.

• This is the sound when the ﬂ ow of refrigerant

inside the unit is changed.

Timer

Weekly timer does not operate

according to settings.

• Is the ON/OFF timer set? Page 9

• Transmit the setting information of the weekly

timer to the indoor unit again. When the infor-

mation is successfully received, a long beep will

sound from the indoor unit. If information fails to

be received, 3 short beeps will be heard. Ensure

information is successfully received. Page 10

• When a power failure occurs and the main power

turns off, the indoor unit built-in clock will be

incorrect. As a result, the weekly timer may not

work normally.

Be sure to place the remote controller where

the signal can be received by the indoor unit.

Page 3

The unit starts/stops the opera-

tion by itself.

• Is the weekly timer set? Page 10

In the following cases, stop using the air conditioner and consult your

dealer.

• When water leaks or drips from the indoor unit.

• When the operation indicator lamp blinks.

• When the breaker trips frequently.

• The remote control signal is not received in a room where an electronic ON/OFF

type ﬂ uorescent lamp (inverter-type ﬂ uorescent lamp, etc.) is used.

• Operation of the air conditioner interferes with radio or TV reception. An ampli-

ﬁ er may be required for the affected device.

• When an abnormal sound is heard.

WHEN YOU THINK THAT TROUBLE HAS OCCURRED

SG79F661H02_en.indd 12 2012/12/18 (火) 午後 1:28:27

Mitsubishi Electric MSZ-FH25VE-E1 [13/28] Hen you think that trouble has occurred

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