81
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 display &
receiver panel to refer to malfunction reason for easy fast service and maintenance.
Display & receiver panel used with models :
12K – 18K – 24K – 30K – 36K – 42K – 48K – 60K
MALFUNCTION
REASON
LED
OPERATION
LED
TIMER
LED
DEF/FAN
LED
ALARM
DISPLAY
DIGITAL TUBE
Indoor and Outdoor communication malfunction
ƿ
X
ƿ
X
E1
Room temperature sensor (open or short circuit )
X
ƿ
X
X
E2
Indoor coil temperature sensor
( open or short circuit )
ƿ
X
X
X
E3
Outdoor temperature sensor or coil temperature
sensor ( Open or short circuit ) or
( Phase reversal error or phase loss )
Ȟ
Ȟ
Ȟ
Ȟ
E6
Indoor PCB ( EEPROM malfunction )
Ȟ
Ȟ
X
X
E7
Water-level alarm malfunction
( with optional drain pump )
X
X
X
Ȟ
E8
Indoor DC motor out of control
X
ƿ
X
ƿ
Eb
Refrigerant Leak or any malfunction leads to
stopping of compressor operation
ƿ
X
X
ƿ
EC
Display & receiver panel used with model : 72K
MALFUNCTION
REASON
LED
OPERATION
LED
TIMER
LED
DEF/FAN
LED
ALARM
DISPLAY
DIGITAL TUBE
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
E6
Indoor PCB ( EEPROM malfunction )
E7
Outdoor unit malfunction ( Phase reversal error
or phase loss )
Ed
Water-level alarm malfunction ( with optional
drain pump )
EE
ƿ
= Flash at 5Hz
X
= OFF
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.
Summary of Contents for ClassiCool 53KDMT12N-718
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