Daikin MTKM50UV16V, Operation Manual

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Troubleshooting
Troubleshooting
Fault diagnosis by remote controller
The remote controller can receive relevant error codes from the indoor unit.
1. When [CANCEL] is held down for about 5 seconds, " DD
"
blinks in the
temperature display section.
2. Press [CANCEL] repeatedly until a long beep is produced.
• The code indication changes as shown below, and notifies with a long beep.
COOE
MEANING
00 NORMAL
LIA INDOOR-OUTDOOR UNIT COMBINATION FAULT
SYSTEM
uo
REFRIGERANT SHORTAGE
U2 DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
U4 FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
A1 INDOOR PCB DEFECTIVENESS
A5 FREEZE-UP PROTECTOR
INDOOR
A6 FAN MOTOR FAULT
UNIT
C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9 FAULTY SUCTION AIR TEMPERATURE SENSOR
E1 CIRCUIT BOARD FAULT
E5 OL STARTED
E6 FAULTY COMPRESSOR START UP
E7 DC FAN MOTOR FAULT
E8 OVERCURRENT INPUT
F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6 HIGH PRESSURE CONTROL (IN COOLING)
F8
OPERATION HALT DUE TO COMPRESSOR INTERNAL TEMPERATURE ABNORMALITY
OUTDOOR
HO SENSOR FAULT
UNIT
H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8 DC CURRENT SENSOR FAULT
H9 FAULTY SUCTION AIR TEMPERATURE SENSOR
J3 FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
L3 ELECTRICAL PARTS HEAT FAULT
L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
L5 OUTPUT OVERCURRENT
P4 FAULTY INVERTER CIRCUIT HEATSINKTEMPERATURE SENSOR
NOTE
• A short beep indicates non-corresponding codes.
• To cancel the code display, hold down
(CANCEL)
for about 5 seconds.
The code display also cancels itself if the button is not pressed for 1 minute.
DAIKIN INDUSTRIES, LTD.
Head office:
Osaka Umeda Twin Towers South
1-13-1 , Umeda , Kita-ku , Osaka , 530-0001 , Japan
Tokyo o ff ice:
Y aesu Central Tower , Tokyo Midtown Y aesu ,
2-2-1 , Y aesu , Chuo-ku , Tokyo , 104-0028 , Japan
http://www.daikin.com