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9 Troubleshooting
9�2 Troubleshooting tips
When troubles occur, please check the following points before contacting a repair
company.
Problem
Possible Causes
Power failure
The power is turned off
The fuse is burned out
The unit is
Remote control batteries are
not working
dead
The Unit's 3-minute protection
has been activated
Temperature setting may be
higher than the ambient room
temperature
The heat exchanger on the
indoor or outdoor unit is dirty
The air filter is dirty
Poor cooling
The air inlet or outlet of either
performance
unit is blocked
Doors and windows are open
Excessive heat is generated by
sunlight
Low refrigerant due to leak or
long-term use
There's too much or too little
refrigerant in the system
There is air, incompressible
gas or foreign material in the
The unit
refrigeration system.
starts
and stops
System circuit is blocked
frequently
The compressor is broken
The voltage is too high or too
low
60 / EN
Solution
Wait for the power to be restored
Turn on the power
Replace the fuse
Replace batteries
Wait three minutes after restarting the
unit
Lower the temperature setting
Clean the a ected heat exchanger
Remove the filter and clean it according
to instructions
Turn the unit off, remove the obstruction
and turn it back on
Make sure that all doors and windows are
closed while operating the unit
Close windows and curtains during
periods of high heat or bright sunshine
Check for leaks, re-seal if necessary and
top off refrigerant
Check for leaks and recharge the system
with refrigerant
Evacuate and recharge the system with
refrigerant
Determine which circuit is blocked and
replace the malfunctioning piece of
equipment
Replace the compressor
Install a manostat to regulate the voltage
Multi Split Type Air Conditioner / User Manual
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