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Phenomenon
Possible results
Solution
The unit
does not
start-up
There is no action
after the unit is
energized.
No power
Check the power circuit
The power plug is not well insert or
bad connection.
Check the plug is well insert, and make sure
the connection is good.
The fuse is damaged.
Replace the fuse
The connection line of indoor unit is
loose.
Re-insert it refer to the circuit diagram.
Controller (power circuit, slug, crystal
vibration) is damaged.
Replace controller
The buzzer give out a
beep when the unit is
energized. But does
not start-up if press
ON/OFF.
indoor environment temperature sensor
is damaged (bad contact, loose,
leading-out wire is damaged, the
resistance of temperature's terminal
is abnormal and so on).
Temperature sensor is well connected or
replace temperature sensor.
LED displays "H8",
buzzer alarms 8 times
(over-blow protection)
The water on the chassis is over-blow. Drainage the wate
Switch circuit of water level is damaged. Check the switch of water level and circuit.
Turn on the
fan, and the
compressor
does not
start-up.
Turn on or turn off
compressor
frequently under
cooling or dry mode.
(abnormal anti-freeze
protection)
Filter is dirty.
Clean the filter.
The inlet and outlet port are blocked.
Move the barrier or move the unit ro empty
place.
The rotational speed of fan is slow, or
fan does not rotate.
Check if the fan motor's supply circuit of
controller is normal, if the connection wire
of motor is loosen, and failure for capacity
or motor.
The refrigerant is leakage.
Detect the leakage or charge refrigerant.
The cooling system is blocked.
Clean pipe system and recharge.
Compressor (or its capacity) is failure.
Replace compressor (capacity)
Failure for tube temp. sensor (bad
contact, loose,leading-out wire is
damaged, the resistance of
temperature's terminalis abnormal )
Temperature sensor is well connected or
replace temperature sensor.
Controller is damaged.
Replace the controller.
Display "E5"
The power is low.
Insure the power is under normal range and
use voltage regulator.
Load is large (the system or port is
blocked or dirty; or failure for fan and
compressor)
Solve failure or replace failure component
supply
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