Mitsubishi Electric City Multi PKFY-P VBM-E Serie Manual De Instrucciones página 14

7. Troubleshooting
Having trouble?
Noise is louder than specifications.
Nothing appears in the wireless remote controller display, the display
is faint, or signals are not received by the indoor unit unless the
remote controller is close.
The operation lamp near the receiver for the wireless remote
controller on the indoor unit is blinking.
Warm air blows from the indoor unit intermittently when heating mode
is off or during fan mode.
The damper opens and closes automatically.
(For PFFY-P·VKM-E2)
Air outlet control (PFFY-P·VKM-E2)
This unit is automatically controlled that air comes out simultaneously from the upper and lower air outlets so that the room can be cooled or heated
effectively.
Description of operation
Operation
Air flow
Upper and lower air flow
Room temperature
and set
temperature are
Conditions
different.
This unit can be set to blow out air from the upper air outlet only by changing the switch setting on the address board (ask the dealer).
Range of application
The range of working temperatures for both the indoor and outdoor units of the series Y, R2, Multi-S is as below.
If the air conditioner operates but does not cool or heat (depending on model) the room, consult your dealer since there may be a
refrigerant leak. Be sure to ask the service representative whether there is refrigerant leakage or not when repairs are carried out.
The refrigerant charged in the air conditioner is safe. Refrigerant normally does not leak. However, if refrigerant gas leaks indoors, and
comes into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated.
14
COOL
Upper air flow Upper air flow only
Room temperature
is close to set
temperature or
thermo-off.
Here is the solution. (Unit is operating normally.)
The indoor operation sound level is affected by the acoustics of the
particular room as shown in the following table and will be higher than
the noise specification, which was measured in an echo-free room.
High sound-
absorbing
Broadcasting
Location
studio, music
examples
room, etc.
Noise levels 3 to 7 dB
The batteries are low.
Replace the batteries and press the Reset button.
If nothing appears even after the batteries are replaced, make sure that
the batteries are installed in the correct directions (+, –).
The self diagnosis function has operated to protect the air conditioner.
Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be sure
to provide the dealer with the model name.
When another indoor unit is operating in heating mode, the control valve
opens and closes occasionally to maintain stability in the air conditioning
system. This operation will stop after a while.
* If this will cause an undesirable rise in the room temperature in small
rooms, etc., stop the operation of the indoor unit temporarily.
The damper is automatically controlled by a microcomputer according to
the air flow temperature and operation time of the air conditioner.
DRY
Upper and lower air flow
(Normal condition
(in heating))
—
Normal rooms
rooms
Reception
room, hotel
lobby, etc.
6 to 10 dB
HEAT
Upper air flow Upper and lower air flow
During defrosting
operation, start of
operation, thermo-
off
Low sound-
absorbing
rooms
Office, hotel
room
9 to 13 dB
FAN
—