Fault Codes - Daikin EKHHP300A2V3 Manuel D'installation Et D'utilisation

6.2 Fault codes

The electronic controller of the DAIKIN EKHHP shows error
codes on the display. In addition to the error code, the LED on the
controller flashes (see fig. 6-1).
To delete the error code:
● Press key for at least 5 s.
If the error arises again:
● Testing and repair by a DAIKIN heating expert.
1 Error code
2 Flashing LED
Fig. 6-1 Error display
Fault code Component/Designation
A1 PCB fault EKHHP
A5 Refrigerant temperature too high
AC STL Booster heater (BOH)
E1 PCB in the external heat pump device
E6 Refrigerant compressor blocked
E7 Fan block in the external heat pump unit
E8 Flow rate too high in heat pump external unit
EC Temperature in internal hot water tank is too high
F3 The discharge temperature from the heat ex-
changer of the external heat pump unit is too high
H0 Sensor refrigerant circuit
H6 Position sensor refrigerant compressor
H9 Temperature sensor external temperature
HC Hot water storage tank temperature sensor
J3 Temperature sensor discharge refrigerant com-
pressor
L3 Electrical components
L4 Temperature heat exchanger heat pump external
unit too high
L5 Electrical components
P4 Sensor heat exchanger heat pump external unit
defective
U0 Refrigerant loss
U2 Power supply interrupted
U4 Faulty communication heat pump internal unit /
heat pump external unit
U5 Communication error regulator
UA No communication heat pump internal unit / heat
pump external unit
Tab. 6-2 Possible error codes on the controller of DAIKIN EKHHP
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_02 – 09/2015
6 x Malfunctions and fault codes
Installation and maintenance manual
31