Instruction manual

INSTALLATION INSTRUCTIONS R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
421 01 9220 00 17
UNIT 18K & 24K, 230 Volts (Cont.)
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
Overload limit,
compressor speed
reduction
F6
3s off flash
6 times
 
 
Operation normal,
compressor speed
reduced
Refer to service
manual
Over current compressor
speed reduction
F8
3s off flash
8 times
   
Operation normal,
compressor speed
reduced
1. System voltage is
too low
2. System voltage is
high
Compressor discharge
temp high, compressor
speed reduction
F9
3s off flash
9 times
   
Operation normal,
compressor speed
reduced
1. Load is too great,
ambient temp is too
high
2. Refrigerant is low
3. Electric expansion
valve malfunction
DC voltage is too high PH
3s off flash
11 times
  

Cooling; compressor
stops, outdoor fan
runs, heating all stop
1. Check voltage at
terminal L and N. If
higher than 265VAC,
cut off power supply
and restart system.
2. If input voltage is
normal, check the
voltage at capacitor
on AP1. Replace AP1
if the capacitor
voltage range is
200−280v.
System current too high U9
3s off flash
13 times
 


Cooling,
dehumidifying;
compressor stops,
indoor fan motor
runs, heating all stop.
AP1 malfunction,
replace the AP1 in
outdoor unit
Compressor current too
high
P5
3s off flash
15 times


 
Cooling,
dehumidifying;
compressor stops,
indoor fan motor
runs, heating all stop.
Refer to service
manual (IPM
protection,
compressor speed
reduction, compressor
overcurrent
protection)
Defrost H1
3s off flash
1 times
Heating mode,
compressor runs,
indoor/outdoor fan
motor stop
Normal Operation
Compressor overload
protection
H3
3s off flash
3 times

 

Cooling,
dehumidifying;
compressor stops,
indoor fan motor
runs, heating all stop.
1. Compressor
terminal loose, the
resistance should be
lower than 1 ohm
2. Refer to service
manual.
(discharge/overload
protection)
System overload
protection
H4
3s off flash
4 times
Cooling,
dehumidifying;
compressor stops,
indoor fan motor
runs, heating all stop.
Refer to service
manual
IPM protection H5
3s off flash
5 times
   
Cooling,
dehumidifying;
compressor stops,
indoor fan motor
runs, heating all stop.
Refer to service
manual