Carrier ClassiCool 53KDMT12N-718 - Self Diagnostic Function for Malfunctions Detection

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26. 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.
Wired controler used with models :
12K – 18K – 24K – 30K – 36K – 42K – 48K – 60K
Malfunction Reason
Malfunction Code
Outdoor unit malfunction ( Phase reversal error or phase loss )
E0
Indoor and Outdoor communication malfunction
E1
Room temperature sensor ( Open or short circuit )
E2
Indoor coil temperature sensor ( Open or short circuit )
E3
Outdoor temperature sensor or coil temperature sensor ( Open or short
circuit ) or High pressure protection
E5
Indoor PCB ( EEPROM malfunction )
E7
Indoor DC motor out of control
E8
Water-level alarm malfunction ( with optional drain pump )
EE
Other malfunction
EF
Wired controler used with model : 72K
Malfunction Reason
Malfunction Code
Mode conflict
E0
Indoor and Outdoor communication malfunction
E1
Room temperature sensor ( Open or short circuit )
E2
Indoor coil first pipe temperature sensor (Open or short circuit )
E3
Indoor coil second pipe temperature sensor (Open or short circuit )
E4
Indoor DC motor out of control ( check display panel for error fan protection )
Indoor PCB ( EEPROM malfunction )
E7
Outdoor unit malfunction (Phase reversal error or phase loss or other malfunction)
Ed
Water-level alarm malfunction ( with optional drain pump )
EE
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.
E2
E2