Instruction manual

INSTALLATION INSTRUCTIONS R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
16 421 01 9220 00
UNIT 18K & 24K, 230 Volts
Malfunction
Indoor Unit Display
Outdoor unit display
(LED’s have 3 modes)
OFF, ON, Flash
Operation Status Malfunction
Error
Code
Display
Indicator Display
(LED Flash 0.5s−ON/0.5s−OFF
Running
LED
Cooling
LED
Heating_
LED
D40
/D5
D41
/D6
D42/
D16
D43/
D30
System High Pressure
protection
E1
3s off flash
1 times

  
Cooling,
dehumidifying,
compressor, outdoor
fan motor stop, indoor
fan motor runs.
heating: all stop.
1. System high press,
excess refrigerant.
2. Dirty outdoor heat
exchanger
3. Outdoor ambient
temp is too high
Anti−freezing protection E2
3s off flash
2 times
   
Cooling,
dehumidifying,
compressor, outdoor
fan motor stop, indoor
fan motor runs.
1. Indoor unit return
blocked
2. Low indoor fan
motor speed
3. Evaporator is dirty.
Compressor discharge
high temp protection
E4
3s off flash
4 times
  

Cooling,
dehumidifying,
compressor, outdoor
fan motor stop, indoor
fan motor runs.
heating: all stop.
Refer to compressor
discharge protection
temp.
AC overload protection E5
3s off flash
5 times
 


Cooling,
dehumidifying,
compressor, outdoor
fan motor stop, indoor
fan motor runs.
heating; all stop
1. Power supply is
unstable, too much
variation
2. Power supply
voltage low.
Indoor/Outdoor
communication
malfunction
E6
3s off flash
6 times
  

Cooling, compressor
stop, indoor fan motor
runs, Heating:all stop
Refer to service
manual
Anti−High temp
protection
E8
3s off flash
8 times
   
Cooling, compressor
stop, indoor fan motor
runs Heating:all stop
Refer to service
manual
Indoor unit fan motor no
feedback
H6
3s off flash
11 times
System will stop
1. Indoor control
board AP1
malfunction
2. Indoor motor M1
malfunction
Jumper connection
malfunction protection
C5
3s off flash
15 times
System will stop
Indoor control board
AP1 jump connector
not inserted or broken
Indoor ambient
temperature sensor
malfunction
F1
3s off flash
1 times
Cooling,
dehumidifying; indoor
fan motor runs, all
else stop, heating all
stops
1. Room temp sensor
is not connected to
the control board AP1
2. Room temp sensor
is damaged
Indoor evaporator
sensor open circuit/short
circuit
F2
3s off flash
2 times
Cooling,
dehumidifying; indoor
fan motor runs, all
else stop, heating all
stops
1. Tube temp sensor
is not connected to
the control board AP1
2. Tube temp sensor
is damaged
Outdoor ambient sensor
open circuit/short circuit
F3
3s off flash
3 times
 


Cooling,
dehumidifying;
compressor will stop,
indoor fan motor
runs. Heating all stop
Outdoor temp sensor
not connected or
damaged, check
sensor resistance
value
Outdoor condenser
sensor open circuit/short
circuit
F4
3s off flash
4 times
 


Cooling,
dehumidifying;
compressor will stop,
indoor fan motor
runs. Heating all stop
Outdoor temp sensor
not connected or
damaged, check
sensor resistance
value.
Compressor discharge
temp sensor open
circuit/short circuit
F5
3s off flash
5 times
 
 
Cooling,
dehumidifying will run
for 3 mins, then
compressor will stop,
indoor fan motor will
start, heating will run
3 mins then stop.
1. Discharge temp
sensor not connected
or damaged, check
sensor resistance
values.
2. Sensor head not
located correctly.