24. SELF DIAGNOSTIC FUNCTION FOR MALFUNCTIONS DETECTION
The electronic printed circuit board in the indoor unit is equipped
with smart self diagnostic function which automatically stops the
operation of the air conditioner in case of a malfunction.
When the system is on and in a malfunction, Error Code is shown on the wired controller
display to refer to malfunction reason for easy fast service and maintenance.
Indoor and Outdoor communication malfunction
Room temperature sensor ( Open or short circuit )
Indoor coil temperature sensor ( Open or short circuit )
Outdoor coil temperature sensor ( Open or short circuit )
Indoor PCB ( EEPROM malfunction )
Outdoor unit malfunction ( Phase reversal error or phase loss )
Water-level alarm malfunction ( with optional drain pump )
NOTES
1- Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit breaker to OFF position.
2- After repairing the malfunction, connect the electrical main supply by moving the circuit breaker to ON position
and operate the air conditioner by using wired room controller.
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