MAINTENANCE &
SER
VICE
MAINTENANCE &
SER
VICE
P31 OF 36
P32 OF 36
TROUBLESHOOTING
TROUBLESHOOTING
Change capacitor. And connect the circuit
diagram correctly
Check with a multimeter if the enclosed
motor windings of compressor is with short
or broken circuit or earthing. If so replace
with the same type and specifications.
Knock the compressor housing with a rubber
or with a tap the compressor housing with
rubber mallet or block of wood. This may
loosen compressor and ran. If not change
compressor wood, the compressor might be
shocked and run. If not, change the compressor.
Breakage of compressor capacitor or wrong
wire connection
The motor of compressor is damaged.
The compressor is jammed or blocked.
The compressor is not
running (controller
with output)
Check leakage, carry out vacuum-pumping
after repairing leakage and charge refrigerant
according to requirements
Observe the condensation condition of
evaporator or the reading of high pressure
meter to judge if the system is blocked; deal
with the system accordingly
Charge excess refrigerant in the system
Replace it with a new compressor
Clear the obstacle
1. Connecting wire is loose
2. Fuse is off
3. Thermostat or is broken
4. Electric heater is broken
5. Correct wire connection or replace broken
parts
It is available to install a shade guarding
against sun and rain..If the maximum cooling
capacity still could not ,replace the unit.
Check the forecasted load of cooling
(heating).
Keep a proper sealing for the room and it is
recommended not to use electric appliance
with too much heating when cooling.
Check the reason and correct it.
Insufficiency or leakage of refrigerant
Blockage in cooling system
Excess refrigerant
Low efficiency of compressor itself
Condensate can not be smoothly discharged
During heating, electric heater does not work
Outdoor temperature is too high
If cooling (heating) load is proper
The room is not properly sealed and there is
frequent passage of personnel, or when
cooling, there is heating device in the room
The voltage is not stale
Air conditioning unit
is running but there
is no cooling effect
(or no heating effect)
Protector is activated
due to too overheat
of compressor.
Adjust the volume of refrigerant
Change capillary
Change compressor
Check with a multimeters and see if the
contacts of compressor are normal when
they are not overheated. If not, change the
protector
Shortage or too much of refrigerant
The capillary is block and the sucfiun
temperature pressure is increased
Compressor does not run, jammed or blocked,
and the discharge valve is damaged
Failure exists in the protector
Check if the ground leg is stable.
Adjust the location of the unit.
Fix the stand or install again.
Take out the foreign object.
Tighten the screw.
The installation of compressor is not proper
and the ground leg is not stable.
The system is not level
The system stand is not stable
Foreign object exists in the unit
Screw loose
Abnormal noise and
vibration
Check for the circuit with the circuit diagram
Change fan capacitor of same model and
specification
Replace the failed components
Replace the controller
Wrong wire connection
Damage of fan capacitor
The motor winding is of broken circuit or
short circuit or the built in temperature limiter
device in open circuit due to over heat
Malfunction of controller
Fan doesn't run
during air supply
Replace the battery
Replace the battery
Fix the LED frame properly
Shortage of battery capacity
Shortage of battery capacity
The LED frame is not properly fixed
Receiving distance of
remote control is
short
LED display flashes
or when pressing
the transmit button
the entire screen is
displayed.
LED display is found
short of stroke
The compressor is
frequently ON/OFF
Abnormal power voltage
The system is of a bad heat sinking and the
ventilation is poor
The air conditioner capability does not match
the area of the room, i.e. so called "Big
system, small room"
Check for the causes. Improve the power
supply conditions, and add voltage regulated
power supply
Clean the dust deposited on the system and
remove obstacles at the aid discharge vent
Select an air conditioner meeting the area of
the room
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
