Mitsubishi Electric TRANE CITY MULTI TPKFYP-BM142 Series Operation Manual page 14

6. Trouble Shooting
Having trouble?
Air conditioner operates without the ON/OFF button being pressed.
Air conditioner stops without the ON/OFF button being pressed.
An error code appears in the remote controller display.
Draining water or motor rotation sound is heard.
" " appears in the remote controller display.
(For Wired Remote controller)
Remote controller timer operation cannot be set.
(For Wired Remote controller)
Noise is louder than specifications.
The indoor unit which is not operating becomes warm and a sound, similar
to water flowing, is heard from the unit.
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 flashing.
Warm air blows from the indoor unit intermittently when heating mode is
off or during fan mode.
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Here is the solution. (Unit is operating normally.)
Is the on timer set?
Press the ON/OFF button to stop operation.
Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
Does " " appear in the remote controller display?
Consult the concerned people who control the air conditioner.
Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
Is the off timer set?
Press the ON/OFF button to restart operation.
Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
Does " " appear in the remote controller display?
Consult the concerned people who control the air conditioner.
The protection devices have 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 and information that ap-
peared in the remote controller display.
When cooling operation stops, the drain pump operates and then
stops. Wait approximately 3 minutes.
During central control, " " appears in the remote controller display
and air conditioner operation cannot be started or stopped using the
remote controller.
Are timer settings invalid?
If the timer can be set, or
display.
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 rooms
Broadcasting
Location
studio, music
examples
room, etc.
Noise levels 3 to 7 dB
A small amount of refrigerant continues to flow into the indoor unit
even though it is not operating.
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.
appears in the remote controller
Low sound
Normal rooms
absorbing rooms
Reception room, Office, hotel
hotel lobby, etc. room
6 to 10 dB 9 to 13 dB