Mitsubishi Electric Mr.Slim PUZ-SM100VKA Service Manual page 58

Phone Calls From Customers
Sound 4 A ticking sound is heard from
comes out
the outdoor unit sometimes.
from the air
conditioner.
5 A sound, similar to water
flowing, is heard from the unit.
Something ..... The fan speed does not match
is wrong
the setting of the remote
with the
controller during DRY
blower.....
operation.(No air comes out
sometimes during DRY
operation.)
Something
1 The airflow direction is changed
is wrong
during COOL operation.
with the
airflow
direction...
2 The airflow direction does not
change.
(Up/down vane, left/right louver)
The air conditioner starts operating even though
any buttons on the remote controller are not
pressed.
The air conditioner stops even though any
buttons on the remote controller are not pressed.
OCH708
How to Respond
4 This is not a malfunction.
This is the sound which is heard when the fan of
the outdoor unit is controlling the airflow amount
in order to keep the optimum operating condition.
5 This is not a malfunction.
This is the sound which is heard when the
refrigerant is flowing inside the indoor unit.
This is not a malfunction.
During the DRY operation, the blower's ON/OFF is
controlled by the microcomputer to prevent
overcooling and to ensure efficient dehumidification.
The fan speed cannot be set by the remote
controller during DRY operation.
1 If the up/down vane is set to downward in COOL
operation, it will be automatically set to horizontal
blow by the microcomputer in order to prevent
water from dropping down.
"1 Hr." will be displayed on the remote controller if
the up/down vane is set to downward with the fan
speed set to be less than "LOW".
2 1) Check if the vane is set to a fixed position.
(Check if the vane motor connector is
removed.)
2) Check if the air conditioner has a function for
switching the air direction.
3) If the air conditioner does not have that
function, "NOT AVAILABLE" will be displayed
on the remote controller when "AIR
DIRECTION" or "LOUVER" button is pressed.
1 Check if you set ON/OFF timer.
The air conditioner starts operating at the time
designated if ON timer has been set before.
2 Check if any operations are ordered by distant
control system or the central remote controller.
While "CENTRALLY CONTROLLED INDICATOR"
is displayed on the remote controller, the air
conditioner is under the control of external
directive.
3 Check if power is recovered from power failure
(black out).
The units will automatically start operating when
power is recovered after power failure (black out)
occurs. This function is called "auto recovery
feature from power ".
1 Check if you set ON/OFF timer.
The air conditioner stops operating at the time
designated if OFF timer has been set before.
2 Check if any operations are ordered by distant
control system or the central remote controller.
While "CENTRALLY CONTROLLED INDICATOR" is
displayed on the remote controller, the air conditioner is
under the control of external directive.
58
Note
There might be a case that
"CENTRALLY CONTROLLED
INDICATOR " will not be
displayed.
There might be a case that
"CENTRALLY
CONTROLLED INDICATOR"
will not be displayed.