Mitsubishi Electronics PCA-A.KA User Manual

9. Emergency Operation for Wireless Remote-controller

ON/OFF

TEMP.

°F

FILTER

■ Indicates that the fi lter needs cleaning.

Ask authorized people to clean the fi lter.
■ When resetting “FILTER” display

When the [FILTER] button is pressed 2 times successively after clean-

ing the fi lter, the display goes off and is reset.

10. Care and Cleaning

Note:
● When 2 or more different types of indoor unit are controlled, the cleaning

period differs with the type of fi lter. When the master unit cleaning period
arrives, “FILTER” is displayed. When the fi lter display goes off, the cumu-
lative time is reset.

● “FILTER” indicates the cleaning period when the air conditioner was used

under general indoor air conditions by criteria time. Since the degree of
dirtiness depends on the environmental conditions, clean the fi lter accord-
ingly.

● The fi lter cleaning period cumulative time differs with the model.

● This indication is not available for wireless remote controller.

Having trouble?

Here is the solution. (Unit is operating normally.)

Air conditioner does not heat or cool well.

■ Clean the fi lter. (Airfl ow is reduced when the fi lter is dirty or clogged.)

■ Check the temperature adjustment and adjust the set temperature.

■ Make sure that there is plenty of space around the outdoor unit. Is the

indoor unit air intake or outlet blocked?

■ Has a door or window been left open?

When heating operation starts, warm air does not blow from the indoor
unit soon.

■ Warm air does not blow until the indoor unit has suffi ciently warmed

up.

During heating mode, the air conditioner stops before the set room tem-
perature is reached.

■ When the outdoor temperature is low and the humidity is high, frost

may form on the outdoor unit. If this occurs, the outdoor unit performs
a defrosting operation. Normal operation should begin after approxi-
mately 10 minutes.

11. Trouble Shooting

E.O.

Note:
• Details of emergency mode are as shown below.

Operation mode

COOL

HEAT

Set temperature

24°C, 75°F

Fan speed

High

Airfl ow direction

Horizontal

Downward 4 (5)

(For PKA-A·HA / PKA-A·HAL)

Fig. 9-1

Fig. 9-2

When the remote controller cannot be used
When the batteries of the remote controller run out or the remote control-
ler malfunctions, the emergency operation can be done using the emer-
gency buttons.

[Fig.9-1]

A DEFROST/STAND BY lamp

B Operation lamp

Emergency operation switch (heating)

D Emergency operation switch (cooling)
E Receiver

[Heat pump type]

Cooling

Heating

Stop

[Cooling only type]

Cooling

Stop

Operation Monitor Display

GREEN ORANGE

STOP

○

The orange lamp follows the

switch operation as indicated

at the left for 5 seconds, and

then it will return to the normal

display.

COOL

●

○

HEAT

●

: Turning off

: Lighting

Starting operation
• To operate the cooling mode, press the button

for more than 2

seconds.

• To operate the heating mode, press the button

for more than 2

seconds.

Stopping operation
• To stop operation, press the button

or the button

for more

than 2 seconds.

[Fig.9-2]

DEFROST/STAND BY lamp (Orange)

Operation lamp (Green)

Emergency operation switch (cooling/heating)

Receiver

• Each press of the emergency operation switch will toggle the operation
mode.
• Check “COOL/HEAT” with the operation monitor display. (The orange

lamp

follows this monitor display for 5 seconds after pressing the

emergency operation switch.)

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