Daikin FTKS50BVMB, Service Manual

Page: 327 / 456

SiEN18-622 Service Check Function
Troubleshooting 315
2.5 Sky Air Indoor Unit Error Codes and LED Indication
Symbols
5 : Blinks 4 : On 3 : Off — : No connection with troubleshooting
 : High probability of malfunction
{
: Possibility of malfunction
: Low probability of malfunction
— : No possibility of malfunction (do not replace)
System
Indoor Unit
Remote
Control
Display
Location of Malfunction Contents of Malfunction Details of
Malfunction
(Reference
Page)
Other
than PC
Board
PC Board
Outdoor
Unit
Indoor
Unit
Remote
Control
U5

—
{ {
Transmission error (between
indoor and remote control) 347
U8
 — { { Transmission error between
“main” remote control and
“sub” remote control 348
UA

—
{
— Excessive indoor units
connected to this system. 349
Indoor
Unit
LED
Display
(H1P)
Remote
Control
Display
Location of Malfunction Contents of Malfunction Details of
Malfunction
(Reference
Page)
Other
than PC
Board
PC Board
Outdoor
Unit
Indoor
Unit
Remote
Control
5
— — — — Normal
→
to outdoor unit —
5
A1
— —
{
— Failure of indoor unit PC
board (For self-diagnosis by
LED, refer to p.304.) 333
4
3
5
A3
 — — — Malfunction of drain water
level system 334
5
AF
 — — — Float switch operation
during compressor stop 336
5
A6
(FHQ only)
 — — Indoor unit fan motor
overload / overcurrent / lock 337, 338
5
A7

— — Swing flap motor
Malfunction / Lock 340
5
AJ
 — { — Failure of capacity setting 342
5
C4

— — Malfunction of heat
exchanger temperature
sensor system (R2T) 343
5
C5
 — — Malfunction of heat
exchanger temperature
sensor system (R3T) 344
5
C9

— — Malfunction of suction air
temperature sensor system 345
5
CJ
— — — Malfunction of remote
control air temperature
sensor system 346