
82
Faults and solution
No Main reasons ?Diagnose Normal conditions Solution
Faults content
1
AC open circuit
2
Can't adjust the
indoor fan speed
3
Remote control signal
transmitting or
receiving error
Change the connecting wire
4The horizontal grill
action error
5
The compressor don't
start
1-2 1-3 1-4 1-5
575¡575¡575¡285¡
Wire connecting plate broken
or jointing copper foil open
The transformer broken
Can't adjust the indoor fan
speed under sleeping mode
(low speed)
Can't adjust the indoor fan
speed under dehumidifying
mode (low speed)
Battery power used up
Wrong battery connection
Caused by other light
(too near)
Use the remote control with
incorrect place or angle
Broken wire connecting
Check the voltage of battery
Check the direction of battery
Check after turning off the light
Use the remote control within
the valid angle and distance
Check the wire connection
Check the signal receiver
Check the weld of signal
receiver
Use temporary switch for
test
Try again after turning off
the power
Signal receiver error
PCB of remote control error
Chip wrong action
Check voltage of the
transformer
Check if the units under
sleeping mode
Check the operation mode
Check by eyes
Linkage construction fall off
The joint ends of the
horizontal grill fall off
Check the linkage parts
Check both ends of the
horizontal grill plate
Step motor error
Wrong wire connection
(Communication error)
Check the existence of
step motor
Check the wire connection
IPM protection or default
Turn off the power, discharge
the power of capacitor and
then test the current.
The total voltage should > 2.5V
Instruction in the battery box
The unit recover after turning
off the light
Signal transmits OK within
the valid angle and distance
No connection broken
Steady connection,touch well
No rupture and weld ill
Remote controller transmit well
The unit operate well
The unit start to run after
restart
The speed changeable except
sleeping mode
The speed changeable
except dehumidifying mode
AC10~16V
Connecting plate and copper
foil connected well
The horizontal grill move easy
Both ends of horizontal grill
plate steady installation
L-N˖AC220V
1-N˖Being lined signals
Running: DC 2.5V
Stop: DC 12-18V
Overload current DC<2.5A
Change the battery
Correct the direction of battery
Change the location of the light
Use the remote control
according to the User Manual
Chang the connecting plate or
repair the jointing copper foi
Change the transformer
Explain to user
Explain to user
Signal receive successfully
Repair the linkage parts?
Solution to disturbance
Anti-jamming to the chip
Change the signal receiver
Change the remote controller
Change the signal receiver
Confirm the joint ends well
connected
Change the step motor
Correct the wire connection
Change the PCB of remote
control
Check the remote controller
Replace the signal receiver
and check it
Change the IPM
Test data
normal
data
U
V
W
Ğ
N
Test data
normal
data
N
U
V
W
420K
Check the heat sinker of the
IPM
Change the heat sinker
Test data
normal
data
U
V
W
Ğ
N
P
Test data
normal
data
N
U
V
W
420K
530K
P
Heat disperse well
Faults & self-diagnoses
Repair and correct the
connection