Mitsubishi PJZ012A087B Manual Do Utilizador
18
TROUBLE SHOOTING
The phenomena mentioned below is not malfunction.
TROUBLE SHOOTING
Check the following items before requiring service.
THE UNIT DOES NOT WORK AT ALL
Is the power supply switch
turned off?
turned off?
Is there a blackout or is the
fuse blown?
fuse blown?
Is the leakage breaker
activated?
activated?
Dangerous. Immediately turn
off the power supply switch,
and contact your dealer.
off the power supply switch,
and contact your dealer.
Is sunlight or other strong
illumination striking the
receive unit? (wireless unit)
illumination striking the
receive unit? (wireless unit)
ON
OFF
Is the air filter clogged?
Is the swing louver
horizontal (during
heating)?
If the swing
louver is
horizontal, the
airflow may not
reach down to
the floor.
horizontal (during
heating)?
If the swing
louver is
horizontal, the
airflow may not
reach down to
the floor.
Are there any obstacles
blocking the air inlet
and outlet grill?
blocking the air inlet
and outlet grill?
• Is the direct daylight
coming into the room?
• Are there any
unexpected heat
sources in the
room?
sources in the
room?
• Are there too many
people in the room?
Is the unit in the
heating preparation
mode?
heating preparation
mode?
See page 18
POOR COOLING OR HEATING
POOR COOLING
If, after checking the items above, the air conditioner still does not operate normally or in the next cases, stop operating and contact your dealer.
• If the fuse and breaker blow frequently. • If water drips at cooling/dehumidifying operation. • If the operation or operation noise is abnormal.
• If the check indicator light flashes.
• If the fuse and breaker blow frequently. • If water drips at cooling/dehumidifying operation. • If the operation or operation noise is abnormal.
• If the check indicator light flashes.
The phenomena mentioned below is not malfunction.
NO AIRFLOW AT HEATING
The air conditioning system
sounds as if water is
draining from it.
sounds as if water is
draining from it.
Sounds of rustling or gurgling may be heard when the operation is started, when the compressor is activated/
deactivated during operation, or when the operation is stopped. These are the sounds of the refrigerant
flowing through the system.
deactivated during operation, or when the operation is stopped. These are the sounds of the refrigerant
flowing through the system.
Sounds of rustling or
gurgling may be heard from
a stopped indoor unit.
gurgling may be heard from
a stopped indoor unit.
These sounds can be heard when the air conditioning system is performing automatic control.
MAINTENANCE OF THE UNIT
AT THE END OF THE SEASON
(after a long period of use)
(after a long period of use)
AT THE BEGINNING OF THE SEASON
(after a long unused period)
(after a long unused period)
• Clean the unit by wiping with a piece of soft and dry cloth.
If the unit is very dirty, wipe it with a piece of cloth wet with
neutral detergent dissolved in lukewarm water and wipe it
off with clean water.
neutral detergent dissolved in lukewarm water and wipe it
off with clean water.
• Clean the air filter and mount it.
• Clean the indoor/outdoor units.
• Clean the indoor/outdoor units.
• Inspect the air filter. If it is dirty, clean and mount it.
• Turn on the power supply button for 6 hours before
• Turn on the power supply button for 6 hours before
starting the operation.
How to clean
1 Wash away for cleaning. If it is not so dirty, tap it or use
cleaner.
If it is very dirty, dissolve some neutral detergent in lukewarm
water (approximately 30°C), rinse the filter with it and wash
the detergent away completely.
water (approximately 30°C), rinse the filter with it and wash
the detergent away completely.
2 After the air filter is dried, mount it to the main body and press
RESET button.
ATTENTION
• Do not dry by exposing the air filter to the direct sunlight or
using fire. Otherwise, the filter may be damaged.
• Do not operate the air conditioner with the filter removed.
Otherwise it may lead to trouble.
HOW TO MAINTAIN
The supply air from the
indoor unit smells bad.
indoor unit smells bad.
The supply air from the indoor unit may smell bad if the smell of cigarettes, cosmetics and/or furniture has
saturated the air conditioning system.
saturated the air conditioning system.
White vapor is generated
from the indoor unit during
operation.
from the indoor unit during
operation.
White vapor may be generated during operation if the system is used in environment where oils and fats are
frequently used, such as in restaurants. In this case, consult the dealer and clean the heat exchanger.
frequently used, such as in restaurants. In this case, consult the dealer and clean the heat exchanger.
The operation switched to
fan operation during cooling
operation.
fan operation during cooling
operation.
The operation may switch to fan operation automatically in order to avald frost being built up on the surface of
the heat exchanger. The operation will soon return to cooling operation.
the heat exchanger. The operation will soon return to cooling operation.
The operation switched to
fan operation during cooling
operation.(in case of FDFW
type)
fan operation during cooling
operation.(in case of FDFW
type)
In case the relative humidity is 73% or higher, the operation may alternate between fan operation and cooling
operation even though the thermostat has not been activated. The objective of this operation mode is to
prevent condensate dew formation and dew dropping from indoor unit air supply port.
operation even though the thermostat has not been activated. The objective of this operation mode is to
prevent condensate dew formation and dew dropping from indoor unit air supply port.
The indoor fan does
not stop even when the
operation is stopped in
heating mode.
not stop even when the
operation is stopped in
heating mode.
The indoor unit fan may continue operating for 40 seconds in order to remove remaining heat in the indoor
unit.
unit.
REQUESTS
Do not turn off the power supply until the fan stops.
The air conditioning system
cannot start operating again
immediately after stopping.
cannot start operating again
immediately after stopping.
During the first 3 minutes after stopping operation, it is not possible to perform cooling, dehumidifying or
heating operation even if the ON/OFF button is pressed to indicate “operation.” This is because a circuit for
protecting the compressor is activated (the fan is operating during this period).
heating operation even if the ON/OFF button is pressed to indicate “operation.” This is because a circuit for
protecting the compressor is activated (the fan is operating during this period).
No air comes out during
dehumidifying operation.
The airflow volume cannot
be changed.
dehumidifying operation.
The airflow volume cannot
be changed.
During dehumidifying operation, the fan speed is automatically controlled in low speed/stop cycle in order to
avoid both drastic temperature drop and humidity rise.
avoid both drastic temperature drop and humidity rise.
The swing louver moves
without any operation.
without any operation.
The swing louver automatically swings twice when the power supply switch is turned on. This is not a trouble.
The louver also moves automatically to the horizontal position when “PREPARATION OF HEATING” is
displayed.
The louver also moves automatically to the horizontal position when “PREPARATION OF HEATING” is
displayed.
The outdoor unit discharges
water or steam during
heating operation.
water or steam during
heating operation.
Water or steam is discharge during defrosting operation which removes frost built up on the surface of the
heat exchanger in the outdoor unit in heating mode.
heat exchanger in the outdoor unit in heating mode.
The operation mode cannot
be selected (in case of the
heat recovery system KXR).
be selected (in case of the
heat recovery system KXR).
When operation mode is set to the main and sub indoor unit during the heat recovery system KXR, operation
mode of the sub unit cannot be selected.(In this case, the system conforms to operation mode of the main
unit.)
mode of the sub unit cannot be selected.(In this case, the system conforms to operation mode of the main
unit.)
The outdoor unit fan is not
running even when the
system is in operation.
running even when the
system is in operation.
The fan speed is automatically controlled according to the ambient temperature. It may be stopped in high
ambient temperature in case of heating, and in low ambient temperature in case of coding. Also, the fan is
stopped during defrosting operation.
ambient temperature in case of heating, and in low ambient temperature in case of coding. Also, the fan is
stopped during defrosting operation.
REQUESTS
The fan will suddenly begin to operate even if it is stopped. Do not insert finger and/or stick.
Slapping sounds are heard.
These sounds are generated when plastic components are expanded or shrunk by the heat and rubbed with
each other.
each other.
Hissing sounds are heard
w h e n t h e o p e r a t i o n i s
stopped or during defrost
operation.
w h e n t h e o p e r a t i o n i s
stopped or during defrost
operation.
These sounds are generated when the refrigerant valve inside the air conditioning system is activated.
The air conditioner star ts
operation automatically as
soon as the power supply is
turned on.
operation automatically as
soon as the power supply is
turned on.
In case the automatic restart function is enabled, and when the power supply recovers, the system restarts
the operation automatically as same condition as before power supply is cut.
the operation automatically as same condition as before power supply is cut.
See below
The setting temperature
c a n n o t b e c h a n g e d ( t h e
setting temperature display
flashes).
c a n n o t b e c h a n g e d ( t h e
setting temperature display
flashes).
If changing the set temperature is prohibited on the remote control, it is not possible to change the
temperature setting even
temperature setting even
T or S is pressed.
See right
The airflow becomes weak
if the operation mode is
changed during operation
(in case of the heat recovery
system KXR).
if the operation mode is
changed during operation
(in case of the heat recovery
system KXR).
When you switch the operation mode from Cool to Heat or from Heat to Cool during operation, the airflow
becomes weak for 3 minutes.
becomes weak for 3 minutes.
In case of wirless remote
control, the unit does not
operate with the inspection
display light on the indoor
unit flashing even though
any button on the remote
control is pressed.
control, the unit does not
operate with the inspection
display light on the indoor
unit flashing even though
any button on the remote
control is pressed.
In case the system is controlled by the other centralized remote control and it forbids operating the system
from the remote control, it is not possible to operate by the remote control.
from the remote control, it is not possible to operate by the remote control.
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2014-3-4 10:28:42
2014-3-4 10:28:42