Mitsubishi Electric Mr.SLIM PLA-ZM EA Series Installation Manual page 17

7. Trouble Shooting
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.
After battery installation/replacement of remote controller, part of function
cannot be used.
The operation lamp near the receiver for the wireless remote controller on
the indoor unit is blinking.
The indoor unit which is not operating becomes warm and a sound, simi-
lar to water flowing, is heard from the unit.
Here is the solution. (Unit is operating normally.)
I 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 anechoic room.
High sound
absorbing rooms
Broadcasting
Location
studio, music
examples
room, etc.
Noise levels 3 to 7 dB
I The batteries are low.
Replace the batteries and press the Reset button.
I If nothing appears even after the batteries are replaced, make sure
that the batteries are installed in the correct directions (+, –).
I Please check that the clock setting is completed. If clock setting is not
done, please complete.
I The self diagnosis function has operated to protect the air conditioner.
I 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.
I A small amount of refrigerant continues to flow into the indoor unit
even though it is not operating. (Connected with MXZ/Branch box)
Low sound
Normal rooms
absorbing rooms
Reception room, Office, hotel
hotel lobby, etc. room
6 to 10 dB 9 to 13 dB
en
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