Daitsu DS-18UIAK, Owner'S Manual

Page: 39 / 52

In HEAT mode, when the temperature of indoor
heat exchanger is very low, air flow is stopped
in order to prevent cold air. (Within 2 minutes)
In HEAT mode, when the outdoor temperature
is low or humidity is high, frost will be formed on
the outdoor heat exchanger. The unit will defrost
automatically and indoor unit will stop blowing
air for 3-12 minutes.
During defrosting operation, water or vapour may
be emitted.
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In DRY mode, the indoor fan will stop blowing air
for 3-12 minutes in order to avoid condensate
being vaporised again.
If the unit operates at high humidity for a long time,
moisture will be generated on the air outlet grill
and then drip off.
If any one of the following situations occurs, immediately stop all operations
cut off the power supply, and contact the authorized personnel.
Strong odours are emitted during operation.
The air switch or protection switch often trips.
Power cord and power plug is overheating.
Stop operation and cut off the
power supply.
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Phenomenon
Troubleshooting
Indoor unit can not blow air:
Moisture on air outlet:
C5: Malfunction of connector jumper:
Check if the connector jumper contacts properly.
If the PCB is to be replaced, please take off the
old for the new PCB.
F1: Malfunction of indoor ambient temperature
sensor
●
Check if indoor room temperature sensor is
connected properly.
●
sensor
F2: Malfunction of evaporator temperature
Check if the evaporator temperature is connected
properly.
There is harsh sound during operation.
Water is leaking from the unit.
Water or other liquid is splashed into the unit.
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Defrosting or oil return mode
H6: Indoor fan block
It is normal.
Replace the fan motor or the indoor board if
disabled.
Check if the terminal of the indoor motor is
connected properly.
The indicating lamp in heat mode will wink 0.5s
and light 10s.
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Troubleshooting