52
OCH670
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.
The air conditioner starts operating even though
any buttons on the remote controller are not
pressed.
There might be a case that
“CENTRALLY CONTROLLED
INDICATOR” will not be
displayed.
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.
There might be a case that
“CENTRALLY
CONTROLLED INDICATOR”
will not be displayed.
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.
The air conditioner stops even though any
buttons on the remote controller are not pressed.
Phone Calls From Customers
How to Respond
Note
4
A ticking sound is heard from
the outdoor unit sometimes.
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
A sound, similar to water
flowing, is heard from the unit.
5
This is not a malfunction.
This is the sound which is heard when the
refrigerant is flowing inside the indoor unit.
The fan speed does not match
the setting of the remote
controller during DRY
operation.(No air comes out
sometimes during DRY
operation.)
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.
Something
is wrong
with the
blower…..
1
The airflow direction is changed
during COOL 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
The airflow direction does not
change.
(Up/down vane, left/right louver)
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.
Sound
comes out
from the air
conditioner.
…..
Something
is wrong
with the
airflow
direction...
