Daikin FXSQ-A - Page 19

ESIE15-11A | Part 2. Troubleshooting 2. Error code based troubleshooting
23/09/16 Page 19
VRV4 indoor units
Error code
Main Sub Status outdoor Reset Cause Solution
C4 02 Thermo off Auto
recovery
Coil thermistor short
circuit
Check coil thermistor resistance.
03 Thermo off Auto
recovery
Coil thermistor open
circuit
Check wire harness connections
coil thermistor.
C5 02 Thermo off Auto
recovery
Gas thermistor short
circuit
Check gas thermistor resistance.
03 Thermo off Auto
recovery
Gas thermistor open
circuit
Check wire harness connections
gas thermistor.
C6 01 Thermo off Auto
recovery
Faulty combination
main PCB - inverter
PCB fan motor
Change inverter PCB fan motor
correct type.
C9 02 Thermo off Auto
recovery
Air thermistor short
circuit
Check air thermistor resistance.
03 Thermo off Auto
recovery
Air thermistor open
circuit
Check wire harness connections
air thermistor.
CE 01 Thermo off Auto
recovery
No signal from optional
presence sensor
Check wire harness connections
02 Thermo off Auto
recovery
No signal from optional
floor temperature
sensor
Check wire harness connections
03 Thermo off Auto
recovery
Faulty signal from
optional floor
temperature sensor
Check pins connector no short
circuit
04 Thermo off Auto
recovery
High temperature
detection or electric
noise floor temperature
sensor
Check resistance floor
temperature sensor
CJ 02 Thermo off Auto
recovery
Air thermistor BRC...
short circuit
Check air thermistor BRC…
resistance.
03 Thermo off Auto
recovery
Gas thermistor open
circuit
Check wire soldering air
thermistor BRC… .
U4 01 Thermo off Auto
recovery
Communication error
indoor - BS unit
Check communication between
BS unit and indoor unit(s)
U9 Thermo off Auto
recovery
Communication error
other indoor unit - BS
unit
Check other indoor units with error
other than U9
UA 13 Thermo off Power
reset
Indoor unit refrigerant
type not compatible to
outdoor unit
Change system lay out - remove
this indoor unit from system
15 Thermo off Power
reset
Outdoor unit is not
compatible to self
cleaning panel (up to
VRVII)
Mount standard decoration panel
UE - Warning Auto
recovery
Communication error
to central control
device
Check communication indoor to
central control
Check exi
st
ing group number set
indoor
Check registered group number
central control.