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O P E R A T I O N M A N U A L
SPLIT DUCT AIR CONDITIONER
MODELS:
(R410A)
Before using your air conditioner , please read this manual carefully and keep it for future reference.
KSTU440HFAN1/KSUR440HFAN3
KSTU560HFAN1/KSUR560HFAN3
DK14-02.02.29
Thank you very much for purchasing our air conditioner,

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Table of Contents
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Summarization of Contents

OPERATION PRECAUTIONS
Inspection before operation
Check ground wire, filter, and air inlet/outlet before starting operation.
Safety precautions
General safety rules during operation, like avoiding moisture and flammable gases.
MAINTENANCE & UPKEEP
Importants
Only professionals can perform repair; turn off power before maintenance.
Maintenance & Upkeep Of Outdoor Unit
Cleaning outdoor unit parts, checking for sharpness and blockages.
Operation Required Before Leaving The Air Conditioner Idle For A Long Period
Steps to take before long-term storage, including drying and power off.
Startup After A Long Period Out Of Service
Checks before restarting after a long period of inactivity.
FAULTS OF REMOTE CONTROLLER AND CAUSE
The shift function cannot be set
Troubleshooting when wind speed cannot be shifted or mode selection is problematic.
No sound of receiving signal
Issues with the remote controller signal transmission and reception.
The transmitting symbol "▲" does not blink
Problems with the remote controller's signal transmission indicator.
The temperature indicator dose not light up
Troubleshooting when the temperature indicator on the remote does not illuminate.
The display disappears
Diagnosing display issues on the remote controller after a set time.

Table of Contents