Service manual
61
MAINTENANCE
1 TROUBLE TABLE
WARNING
!
a.  In the event  of abnormal conditions (like, stinky  smell), please  shut  off  the main power  supply immediately 
and then contact the SINCLAIR appointed service center; otherwise the continuous abnormal running would damage the air 
conditioning unit and also would cause electric shock or re hazard etc.
b.  Do not repair the air conditioning personally but instead contact the professionally skilled personnel at the SINCLAIR 
appointed service center, as the incorrect repair would cause electric shock or re hazard etc.
1�1 Please check the following items before contact the maintenance serviceman
Conditions Causes Corrective Actions
The unit does not run
Broken fuse or opened breaker Change the fuse or close the breaker
Power off Restart the unit when power on
Loosened power supply plug. Plug the power supply properly.
Insufcient batteries voltage 
of the remote controller 
Change new batteries
Remote controller out of the control scope  Keep the control distance within 8 meters.
The unit stops soon 
after it starts
Clogged inlet/outlet of the indoor/outdoor unit Clear the obstacle
Cooling/Heating is abnormal
Clogged inlet/outlet of the indoor/outdoor unit Clear the obstacle
Improperly set temperature Adjust the setting of the remote or wired controller.
Too low set fan speed Adjust the setting of the remote or wired controller.
Incorrect air direction Adjust the setting of the remote or wired controller.
Opened door and window Close the door and window
Direct sunlight Hang a curtain or blinds over the window.
Too much people in the room
Too much heat sources in the room Reduce the heat sources
Dirty lter screen Clean the lter screen
Note: 
If the air conditioner still runs abnormally  after the above check and handling, please contact the maintenance 
serviceman at the local appointed service center and also give a description of the error occurred as well as the model of 
the unit
1.2 The conditions listed below are not classied into errors
Conditions Causes
The unit does not run
When restart the unit soon after it is stopped.
The overload protection switch of the unit let 
the startup delayed for three minutes.
As soon as power is on. The unit will stand by for approximate one minute. 
The unit blows out mist When the cooling operation starts. The hi-humidity air indoor is cooled quickly. 
The unit generates 
noise
The unit “clatters” as soon as it starts running. 
It is the sound generated during the initialization 
 of the electronic expansion valve. 
The unit “swishes” during the cooling operation.  It the sound when the refrigerant gas runs inside the unit.
The unit “swishes” when it is started or stopped.  It is the sound when the refrigerant gas stops running.
The unit “swishes” when in it is and 
after the running.
It is the sound when the draining system is operating.
The unit “squeaks” when it is in and 
after the running.
It is the sound of frication generated by the skin plate 
etc which swells due to the temperature change. 
The unit blows 
out dust. 
When the unit restarts after it is not
used for a long time.
The dust inside the unit is blown out again.
The unit emits odors. When the unit is running. The odors absorbed in are blown out again.
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