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Function Description of Functional Dial Switch S7
1. The 3-bit dial switch must be set before energizing the main board and it determines running state of indoor
unit.
2. Function of it is as follow:
Dial switch
Silk screen
Function
Dial ON
Dial OFF
1(S / R)
Selection of memory mode:
Election between reset mode and standby mode after
energizing;
This function is available without wired controller.
Standby after
energizing
Reset after
energizing
2(L / I)
Selection between manual controller and receiver:
If manual controller is selected, remote-control function
of receiver will be shielded.
If receiver is selected, wired controller will be non-
effective.
Selecting
wired
controller
Selecting
receiver joint
3(M / S)
Setting of main and slave indoor units:
For resolution of conflict among the modes;
This function is available without wired controller.
Main indoor
unit
Slave indoor
unit
Analyzing Malfunctions
DO NOT REPAIR
the air conditioner yourself. An incorrect repair could lead electric shock or fire. Contact a certified service
center or technician and have the unit repaired by specially personnel. Check the following items before contacting a service
technician to repair you unit, as this could save your time and expense.
Malfunction Phenomena
Malfunction Analyzing
The air conditioner will not start
right after being turned off.
The over load protect switch of the unit places the unit in a 3 mins delay, after which the
unit will start normally.
There is an odor when the unit
is turned on.
This is because when air conditioning, odors or cigarette smoke from the room that were
pulled into the unit are being discharged into the tom again.
Slight bicker was heard when
the unit is running.
This is the sound for inner refrigerant flowing.
Mist comes from the air outlet
vent when cooling.
Indoor air is being cooled rapidly.
Creaking sound is heard when
unit is running or after running.
The grating sound is caused by the expansion of panels and other metal parts in the unit
due to a change in temperature within the unit.
The air conditioner will not run.
Is power off?
Is the power supply connected?
Is the circuit protector tripped?
Is the voltage too high or too low?
If TIMER had been set in wireless remote controller?
The cooling/heating effect of
the air conditioner is not as
expected.
Is the temperature set too high or too low?
Is the inlet or outlet vent of outdoor unit blocked?
Is the air filter dirty causing a blockage?
Are all windows and doors closed?
Is the fan set to Low speed?
Are there other heating sources in the room?
Wireless remote controller will
not control the unit.
Changed the batteries, the wireless remote controller sometimes will appear as though it
ca
n’t control. Take off the back cover and press the
ACL
button to make it normal.
The air conditioner is operating abnormally or changing functions too frequently, making
the wireless remote controller ineffective. Reset the breaker supplying power to the unit
and the unit should resume normal operation.
Is the controller within the receiving area? Or is there smoothing blocking the signal?
Check batteries in wireless remote controller and ensure they are the correct type and size
recommend for the remote controller. If not, change the batteries.
