Power indicator blinks and E5 is displayed
E5: overcurrent protection
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C5:Connector jumper malfunction
Check if the connector jumper contacts the
properly.If replace the PCB,please take off
the old for the new PCB.
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F1:Indoor ambient temp. sensor
malfunction
malfunction
Check if indoor room temp.sensor is
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Feedback terminal of PG motor hasn’t
been connected firmly.
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The control end of PG motor hasn’t been
connected firmly.
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Fan blade hasn’t been installed correctly
and it can’t run smoothly.
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Motor hasn’t been installed correctly and
tightly.
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Motor has been damaged.
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Control panel has been damaged.
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Control panel has been damaged.
connected properly?
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F2:Evaporator temp.sensor
H6:PC motor (indoor fan) can’t run
U8:Malfunction of zero cross detection
circuit for PG motor (indoor fan)
Check if indoor tube temp.sensor is
connected properly?
Immediately stop all operations and plug out, contact
the dealer in following situations.
There is harsh sound during operation.
The terrible odors emitted during operation.
Water is leaking in the room.
Air switch or protection switch often breaks.
Carelessy splash water or something into unit.
There is an abnormal heat in power supply cord
Stop running and cut off the power
supply.
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Troubleshooting
Phenomenon
Troubleshooting
Indoor unit cannot deliver air.
In HEAT mode, when the temperature of indoor
heat exchanger is very low, that will stop deliver
air in order to prevent cool air. (Within 2min)
In HEAT mode, when the outdoor temperature
is low or high humidity, there are much frost be
formed on the outdoor heat exchanger, that the
unit will automatically defrost, indoor unit stop
blowing air for 3-12min.
During the defrosting, there is water flowing out
or vapor be produced.
In dry mode, sometimes indoor fan will stop, in
order to avoid condensing water be vaporized
again, restrain temperature rising.
1
7
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Defrosting or oil return mode
It is normal.
The indicating lamp in heat mode will wink
0.5s and light 10s.
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