Instruction manual

INSTALLATION INSTRUCTIONS R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
421 01 9220 00 15
UNIT 12K, 230 Volts
Malfunction
Indoor Unit Displaying Method
State of lamps of outdoor unit
PCB
Reasons
Double
8 Code
Display
Indicator Display
(LED Flash 0.5s−ON/0.5s−OFF
Error
Code
Running
LED
Cooling
LED
Heating
LED
Green
LED2
Red
LED3
Yellow
LED4
Stop for anti−freeze
protection of indoor −unit
E2
3s off flash
2 times
Flash−4
Times
Flash
3 Times
Refrigerant leakage. indoor unit air
flow blocked. Filter dirty.
Stop for discharge temp
protection
E4
3s off flash
4 times
Flash
7 Times
Low refrigerant. Capillary blocked.
Ambient temp is abnormal.
Overcurrent protection E5
3s off flash
5 times
Flash
5 Times
Low voltage, ambient temp is
abnormal.
Stop for communication
error
E6
3s off flash
6 times
No Flash
Communication line failure, Main
PCB failure. Outside interference,
wiring error.
Stop for compressor
overload protection
H3
3s off flash
3 times
Flash
8 Times
Compressor overheat. Low
refrigerant. Capillary blocked.
Overload protection H4
3s off flash
4 times
Flash
6 Times
Ambient temp is abnormal. Heat
exchanger blocked.
Stop for IPM module
protection
H5
3s off flash
5 times
Flash
4 Times
IPM module over temperature, low
voltage, silica grease problem
Indoor unit fan motor does
not operate
H6
3s off flash
11 times
Motor control terminal contact
problem, fan does not rotate
smoothly due to incorrect
installation, motor or control panel
is damaged.
Indoor ambient temperature
sensor malfunction
F1
3s off flash
1 times
Bad terminal connection. Temp
sensor malfunction.
Indoor tube temperature
sensor malfunction
F2
3s off flash
2 times
Bad terminal connection. Temp
sensor malfunction.
Outdoor ambient
temperature sensor
malfunction
F3
3s off flash
3 times
Flash−6
Times
Bad terminal connection. Temp
sensor malfunction.
Outdoor tube temperature
sensor malfunction
F4
3s off flash
4 times
Flash−5
Times
Bad terminal connection. Temp
sensor malfunction.
Outdoor discharge
temperature sensor
malfunction
F5
3s off flash
5 times
Flash−7
Times
Bad terminal connection. Temp
sensor malfunction.
Jumper connection
malfunction protection
C5
3s off flash
15 times
No jumper on controller or installed
improperly or damaged.
Corresponding circuit on mainboard
has malfunction.
Unit match protection LP
Flash
16 Times
Indoor and outdoor units not
matched
Indoor fan zero−cross
detection circuit malfunction
U8
Abnormal zero−cross detection
circuit on mainboard.
PFC overcurrent malfunction HC
3s off flash
6 times
Flash
14 Times
Overcurrent on PFC
High power protection L9
Flash
9 Times
System power is too high
High voltage protection PH
3s off flash
11 times
Flash
13 Times
DC side voltage is too high
Low voltage protection PL
3s off flash
21 times
Flash
12 Times
DC side voltage is too low
Automatic defrosting H1
3s off flash
1 times
Flash
2 Times
H1 signal normal operation, heat
pump only.
Remark
1. Error codes only can be seen in the type which has the temperature display PCB. Some types do not have this
function and have only the LED’s on the outdoor PCB.
2. If there is normal communication between the Indoor and Outdoor unit the green LED will be on.