12 Troubleshooting
Installer reference guide
81
EPGA11~16DAV3 + EABH/X16DA6V+9W
Daikin Altherma – Low temperature split
4P556069-1 – 2018.10
Error code Detailed error
code
Description
H9 00 OU: Malfunction of outdoor air
thermistor
HC 00 Tank temperature sensor
problem
HJ 10 Water pressure sensor
abnormality
HJ 11 Boiler abnormality detection
HJ 12 Bypass valve turning error
J3 00 OU: Malfunction of discharge
pipe thermistor
J5 00 Malfunction of suction pipe
thermistor
J6 00 OU: Malfunction of heat
exchanger thermistor
J6 07 OU: Malfunction of heat
exchanger thermistor
J6 32 Leaving water temperature
thermistor Abnormality (outdoor
unit)
J6 33 Sensor communication error
J7 12 Brine inlet thermistor abnormality
J8 00 Malfunction of refrigerant liquid
thermistor
J8 07 Brine outlet thermistor
abnormality
JA 00 OU: Malfunction of high pressure
sensor
JA 17 Refrigerant pressure sensor
abnormality
L1 00 Malfunction of INV PCB
L3 00 OU: Electrical box temperature
rise problem
L4 00 OU: Malfunction of inverter
radiating fin temperature rise
L5 00 OU: Inverter instantaneous
overcurrent (DC)
L8 00 Malfunction triggered by a
thermal protection in the inverter
PCB
L9 00 Prevention of compressor lock
LC 00 Malfunction in communication
system of outdoor unit
P1 00 Open-phase power supply
imbalance
P3 00 Abnormal direct current
P4 00 OU: Malfunction of radiating fin
temperature sensor
PJ 00 Capacity setting mismatch
U0 00 OU: Shortage of refrigerant
U1 00 Malfunction by reverse phase/
open-phase
U2 00 OU: Defect of power supply
voltage
U3 00 Under floor heating screed dryout
function not completed correctly
U4 00 Indoor/outdoor unit
communication problem
U5 00 User interface communication
problem
Error code Detailed error
code
Description
U6 36 Boiler standby abnormality
U7 00 OU: Transmission malfunction
between main CPU- INV CPU
U8 01 Connection with LAN adapter lost
U8 02 Connection with room thermostat
lost
U8 03 No connection with room
thermostat
U8 04 Unknown USB device
U8 05 File malfunction
U8 06 Boiler communication error
U8 07 P1P2 communication error
U8 08 Boiler communication error
UA 00 Indoor unit, outdoor unit matching
problem
UA 17 Tank type problem
UA 21 Extension/hydro mismatch
problem
UA 22 Communication problem between
control box and option box
UA 52 Boiler, indoor unit matching
problem
UF 00 Reversed piping or bad
communication wiring detection
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Type > Reheat or
Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
NOTICE
When the minimum water flow is lower than described in
the table below, the unit will temporarily stop operation and
the user interface will display error 7H‑01. After some time,
this error will reset automatically and the unit will resume
operation.
INFORMATION
Error AJ-03 is reset automatically from the moment there is
a normal tank heat-up.
INFORMATION
In case of an E7‑62 error, brine pump operation stops due
to not enough flow in the brine circuit. If 10‑day brine pump
operation is running, it will stop running and will only
resume once the error is reset. It is only possible to reset
the error with the domestic hot water home screen or the
leaving water temperature home screen turned ON. To
reset the error, press and confirm by pressing .
To Next Page
Loading...
