< Reference >
When operation stop with LD301 blinks 12 times, it may be caused by faulty DC fan motor.
In this case, please check CN6 and CN12 connection first. It makes Fan Motor Lock also if those
connectors are in misconnection.
DC Fan Motor has broken invites 1A Fuse burned. Please replace both DC Fan Motor and 1A Fuse
together.
It will makes “Fan Lock Stop” when something has disturb the Fan rotation by inserting materials into
propeller fan or ice has growing inside of outdoor unit by snowing.
unit will be restart again after a while.
In case of “ Fan Lock Stop” even though the DC Fan Motor is rotating correctly,
correctly
correctly the possible cause in Fan
Motor problem or control board problem. Stop after the Fan motor runs 2 minutes, Fan Motor may be
broken.
< Caution >
Please take care for the electrical shock by high voltage of DC Fan Motor power source which is common
with compressor when you are servicing this unit.
You can not confir
YY
m the coil and wiring of Motor directly due to the built in control circuit in Fan Motor.
It may make “Fan Lock Stop” by strong wind (ex.17m/sec. or above) against the Fan rotation. In this case
COOLING MODE
The compressor has
Fan speed is not switched over
during dehumidifying operation.
Cool air comes from the unit during
dehumidifying operation.
Fans speed is normally set to LOW during
dehumidifying operation.
To have an operation with high dehumidifying
effect, the unit operates at low fan speed.
As a result, cool air comes from the unit.
This phenomenon is not a fault.
stopped suddenly during
cooling operation.
The circulation stops
occasionally during
Heating mode.
When the fan speed is set
at HIGH or MED, the flow
is actually Weak.
Heating operation stops
When “Auto fan” mode is set,
the indoor fan speed changes
from HIGH through MED to
LOW.
while the temperature is
preset at "30".
Check if the indoor heat
exchanger is frosted.
Wait for 3-4 minutes
until it is defrosted.
If the air conditioner operates
in cooling mode when it is
cold, the evaporator may get
frosted.
It occurs during defrost-
ing. Wait for 5-10
minutes until the
condenser is defrosted.
At the beginning of heating,
the fan speed remains
LOW for 30 seconds. If
HIGH is selected, it
switches to LOW and again
to MED after additional 30
seconds.
If temperature is high in
This is not an error.
The anti cool air function
shows this phenomenon.
In the fan “Auto” mode, the unit
detects the heat exchange
temperature. When the
temperature becomes low,
the fan speed changes from
HIGH, through MED to LOW.
the outdoor, heating
operation may stop to
protect internal devices.
DEHUMIDIFYING MODE
HEATING MODE
Q1
A1
Q2
A2
Q3
A3
Q4
A4
Q5
A5
Q6
A6
Q7
A7
SERVICE CALL Q & A
MODEL RAS-E10H2 / RAC-E10H2
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