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PORTABLE AIR CONDITIONER (LOCAL)
SERV
ICE MANUAL
Read the instructions carefully before operating the appliance or carrying out maintenance work.
Observe all the safety instructions; failure to observe the instructions may lead to accidents and/or
damage. Store these instructions in a safe place for future reference.
V 03/17
EN
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1.Malfunction diagnosis
1.Input voltage must be in the range of of rating voltage if work voltage of air conditioner is outside of this range air conditioner will
possibly not run Enough power supply capacity must be provided
2.Make sure the good connection between power supply plug and power supply, otherwise air conditioner will not run normally.
10% , ,
normally. ( )
1-1 Items to be checked at first
3. The phenomenon listed in below table occurred, which are not caused by air conditioner failure
No
1
2
3
4
5
6
Phenomenon
Description
While the power supply pin plug into socket at first time and
sound"tick" is heard, but air conditioner does not run.
While power supply pin plug into socket ,the indicator
lamp of "water full" flickering continuously on display
panel and "tick"sounding continuously, pressing
"ON/OFF" but air conditioner does not run and fan runs only.
Timer is in timing status and air conditioner is in standby status; if cancel timing
operation, air conditioner will recover to normal status.
Under dehumidifying mode, air conditioner will control compressor work
status automatically according to indoor air temperature
under cooling heating or dehumidifying mode,
while air conditioner switches off and immediately
switches on, only fan runs but compressor does not run
While air conditioner switches off and switches on soon, and air conditioner provides
a three-minute delay protection function; three minutes later, compressor will
restart to run.
Which indicates air conditioner is energized, as long as press "ON/OFF"
on display panel or on remote controller, and the signal is received by
air conditioner, which means entering setting operation..
Water of tank is not put out.
Presetting LED lamp lights on but air conditioner does not run
under dehumidifying mode, compressor does not run
continuously
Under cooling mode, while setting temperature above
room temperature, compressor does not run
Setting temperature means a temperature point of ambient temperature decreases upto by way of
operation of air conditioner under cooling. While the setting temperature decreases
below room temperature, compressor will run.
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1.Items to be checked
1 Whether input voltage is right or not
2 Whether the connection of AC power supply is right or not
3 Whether the output voltage of manostat isr ighto rn ot
2.Flow chart of malfunction diagnosis
7805(IC1)
1-2 Guide to malfunction diagnosis
1-2-1 No power supply (completely no work)-preliminary diagnosis
Check transformer whether is intact or not
Check DC voltage on PCB board
whether is intact or not
Check condition of power supply
line and condition end check fuse
Replace Ic2
Check PCB board
replace main PCB board
check connection status of compressor,
motor and fan motorpumping out
YES
NO
YES
NO
NO
Replace PCB
NO
YES
YES
Draw out power supply plug and about
five seconds later insert again
Whether buzzer sounds or not
Whether the indicator lamp LED and digital tube
light on or not
Whether is there signal transmittal indication
on remote controller or not
After press "ON/OFF" on remote controller,
whether air conditioner runs or not?
Normal
Refer to misfunction diagnosis
of remote controller
Whether the preliminary voltage applied
on transformer is normal or not
Whether the voltage of compressor, pumping out
motor and fan motor are normal or not
Whether Ic2 output voltage is normal or not
YES
YES
NO
YES
NO
YES
YES
NO
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1.Items to be checked
1 Whetherindo orfan motoris connected withcon nector a rightway
2 Whether the input voltage of AC power is right or not
3 Whether the operation capacitor of indoor fan motor
Is connected with connector a rightwayor not
2.Flow chart of malfunction diagnosis
X8 in
CN10 CN11 in
1-2-2 Indoor fan motor does not run
After draw out power supply plug and more five seconds,
insert plug again
Replace PCB
PCB failure
Whether input voltage of fan motor is satisfied or not
Whether the core output on controller is normal or not?
Micro-control core failure
Please refer to the description of flow of failure
diagnosis in last page
Whether luminous diode tube LED lights on or not
Fan capacitor failure
Fan motor failure
Replace indoor fan motor
Replace capacitor
YES
NO
NO
YES
YES
YES
NO
YES
YES
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1.Flow chart of malfunction diagnosis
1-2-3 Remote control can not be used
Take out batteries and five seconds later install again
Whether the voltage of Q1 varies or not
Replace triode
Whether the voltage of LED varies or not
Transmittal tube failure
Receiver failure
Whether the voltage of remote controller core Ic1 varies or not
Core failure
Replace button
Liquid crystal failure
Replace batteries
Normal
Whether the LCD of remote controller displays normally or not
Whether battery voltage is less than 2.5 V or not (remote controller )
While press "ON/OFF" on remote controller
whether is music heard or not
Check subject to instruction section of "no
power supply diagnosis.
Whether LED display module lights on or not
YES
NO
YES
NO
YES
YES
NO
While press "ON/OFF" on remote controller, whether
transmittal indicator signal emerge or not
YES
NO
NO
NO
NO
NO
YES
YES
YES
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1-3 PCB check
1-3-1 points for attention while replace parts
1.Make sure that human body is grounded as a safety way or not before execute reparation and parts replacement due to human body carrying electrostatic,
especially before contact some micro-computer or integrated circuit, confirm to discharge electrostatic completely (make sure whether wear an effective
grounding ring in the wrist or not)
2.While execute a live reparation of parts on work bench, make sure that a insulating cushion must be provided and no metallurgic fragments on cushion.
If any metallurgic fragments contact with parts, possibly, damage other section of parts.
3.Power supply must be cut off before replace components, if perform a live operation, possibly, results in electric shock, short and other damage.
4.During parts replacement or reparation , make sure that: conduct wire on circuit panel (whether there is jumper loop or not); diode location.
Conduct wire and member are damaged resulting from easy to bend and shock due to coarse treatment for circuit panel.
5.Clean the conduct wire and new member by sand paper and etc before welding, otherwise the welding material will be possibly adhered to conduct wire
and parts due to oxidation.
6.Avoid using electric iron with high-efficiency to weld for a long time while welding, otherwise the members with low heat resistance are easy to be damaged.
7.The quantity of heat of electric iron should be spreaded all over the object welded, otherwise welding will not be performed very well.
8.Welding material should be as little as possible while welding, too much welding material possibly causes circuit failure.
1-3-2 Process
Replace member subject to the flow as followed:
Check the member with failure
Dismantle the component with failure
Check capacity of new member
Maintenance finish
Replace failure component
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1-3-3 Detailed process
No
Malfunction
Check point
Reason
1
Disconnection power supply and
check fuse on PCB
Damage or not
Voltage exceeding
Fan motor short
2
Connect with power supply
Check voltage
1.Whether is there normal AC voltage on XB or not?
2.The DC voltage on IC5
input DC12V output DC5V
Rectification circuit mistake
Drop-down transformer does not
work
3
Special protection mode
Check voltage
Circuit malfunction
1.Check the control load for various relays
Relay disconnect 0.5V
Relay connect 6V
Relay malfunction
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一、 Error code display
When Air conditioner has problem, the display will show different error code related to
different problems.
Reason Display Solution
TA abnormal(broken
circuit or short circuit)
“E1” See the detail solution
TE abnormal(broken
circuit or short circuit)
“E3” See the detail solution
TW abnormal(broken
circuit or short circuit)
No error code No error report, stay the
same
Water full “P1” See the water full alarm
function
二、Error solution：
1. TA abnormal, indoor shows E1 keep lighting, air conditioner can run without any
stop except the heating mode, other protection still valid. If under auto mode to
choose the mode according to the environment temperature, please choose fan mode
to run. If under cooling mode, the machine continuous running, If under dehumidifier
mode, fan motor and compressor do not working, the up motor is set with low fan speed.
2. If under cooling or dehumidifier mode, TE abnormal, indoor will show “E3” keep lighting.
The normal anti-frozen protection function no more working. Cooling, dehumidifier mode, carry
out stopped for 5min after compressor continuous working more than 30min. If under heating
mode, indoor shows”E3” keep lighting, air conditioner will stop running.
3. TE and TA happen during the same time, TE error code’s special operation status will has
priority
Remark：
TA: Indoor environment temperature
TE: evaporator coil temperature
TS：Set up temperature
TW：condensor coil temperature；
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Some models have no content
inside dashed frame.
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