SERVICE MANUAL
R
−
410A Ductless Split System: DLF4(A/H), DLC4(A/H)
54
421 08 9204 00
UNITS 30K & 36K, 230 Volts
Malfunction
Display
on
Indoor
Unit
State of the Lamps of Outdoor Unit PCB
Reasons
Error
Code
Yellow
Red
Green
Compressor running (normal)
Flash 1 times
Normal
Auto defrost (normal)
H1
Flash 2 times
Normal
Anti
−
freezing protection
E2
Flash 3 times
Refrigerant leakage. Indoor unit air flow blocked. Filter
dirty.
Stop for IPM module protection
(over current)
H5
Flash 4 times
IPM module over current. Outdoor unit air flow
blocked.
Stop for over current protection
E5
Flash 5 times
Outdoor unit over current. Ambient temp is abnormal
Overload protection
H4
Flash 6 times
Ambient temp is abnormal. Heat exchanger blocked
Stop for discharge temp
E4
Flash 7 times
Low refrigerant. Capillary blocked. Ambient temp is
abnormal.
Stop of compressor overload
protection
H3
Flash 8 times
Compressor shell too hot. Low refrigerant. Capillary
blocked
Stop for over power protection
L9
Flash 9 times
Ambient temp is abnormal.
Stop for IPM module protection
(overheat)
H5
Flash 10 times
IPM module too hot. Outdoor unit air flow blocked.
Stop for EEPROM read
−
write
malfunction
EE
Flash 11 times
The EEPROM on the outdoor PCB mainboard cannot
read or write.
Stop for low voltage protection
PL
Flash 12 times
DC voltage is low.
Stop for high voltage protection
PH
Flash 13 times
DC voltage is high.
Stop for PFC circuit over
current protection
HC
Flash 14 times
The PFC circuit is over current.
No feedback of indoor fan
motor
H6
Indoor fan is abnormal.
Stop for ID and OD don’t match
LP
Flash 16 times
Indoor unit and outdoor unit don’t match.
Compressor frequency limited
by over current protection
Flash 1 times
Outdoor unit over current. Ambient temp is abnormal.
Compressor frequency limited
by discharge temp protection
Flash 2 times
Low refrigerant. Capillary blocked. Ambient temp is
abnormal.
Compressor frequency limited
by overload protection
Flash 3 times
Ambient temp is abnormal. Heat exchanger blocked
Compressor frequency limited
by anti
−
freezing protection
Flash 4 times
Refrigerant leakage. Indoor unit air flow blocked. Filter
dirty.
Outdoor pipe temp sensor
malfunction
F4
Flash 5 times
Circuit open or circuit short for outdoor condenser pipe
temp sensor
Outdoor ambient temp sensor
malfunction
F3
Flash 6 times
Circuit open or circuit short for outdoor environment
temp sensor.
Outdoor discharge temp sensor
malfunction
F5
Flash 7 times
Circuit open or circuit short for outdoor gas
−
discharge
pipe temp sensor.
Normal operation
Flash 8 times
Normal compressor operation.
Compressor frequency limited
by IPM protection
Flash 11 times
IPM module too hot. Outdoor unit air flow blocked.
Compressor frequency limited
by over power protection
Flash 13 times
Ambient temp is abnormal.
Indoor ambient temp sensor
malfunction
F1
Circuit open or circuit short for indoor environment
temp sensor.
Indoor tube temp sensor
malfunction
F2
Circuit open or circuit short for indoor evaporator pipe
temp sensor.
Stop for communication
malfunction
E6
Off
Communication line failure. Main PCB failure. Interfere
source. Wiring error. Condensate pump failure.
Communication normal
Flash 1 times
Communication is normal.
Jumper cap malfunction
protection
C5
The jumper is wrong or missing.
No feedback of outdoor fan
motor
Flash 14 times
High pressure protection
E1
Flash 16 times
NOTE: The lamps Flash 0.5s ON, 0.5s OFF, between two error cycles, it will be 2s off.
