Daikin Altherma EPGA16DAV3 Installer's Reference Manual page 76

12 Troubleshooting
Error code Detailed error
code
H5 00
H6 00
H8 00
H9 00
HC 00
HC 01
HJ 10
HJ 11
HJ 12
J3 00
J5 00
J6 00
J6 07
J6 32
J6 33
J7 12
J8 00
J8 07
JA 00
JA 17
L1 00
L3 00
L4 00
L5 00
L8 00
L9 00
LC 00
P1 00
P3 00
P4 00
PJ 00
U0 00
U1 00
Installer reference guide
76
Description
Malfunction of compressor
overload protection
OU: Malfunction of position
detection sensor
OU: Malfunction of compressor
input (CT) system
OU: Malfunction of outdoor air
thermistor
Tank temperature sensor
problem
Second tank temperature sensor
problem
Water pressure sensor
abnormality
Boiler abnormality detection
Bypass valve turning error
OU: Malfunction of discharge
pipe thermistor
Malfunction of suction pipe
thermistor
OU: Malfunction of heat
exchanger thermistor
OU: Malfunction of heat
exchanger thermistor
Leaving water temperature
thermistor Abnormality (outdoor
unit)
Sensor communication error
Brine inlet thermistor abnormality
Malfunction of refrigerant liquid
thermistor
Brine outlet thermistor
abnormality
OU: Malfunction of high pressure
sensor
Refrigerant pressure sensor
abnormality
Malfunction of INV PCB
OU: Electrical box temperature
rise problem
OU: Malfunction of inverter
radiating fin temperature rise
OU: Inverter instantaneous
overcurrent (DC)
Malfunction triggered by a
thermal protection in the inverter
PCB
Prevention of compressor lock
Malfunction in communication
system of outdoor unit
Open-phase power supply
imbalance
Abnormal direct current
OU: Malfunction of radiating fin
temperature sensor
Capacity setting mismatch
OU: Shortage of refrigerant
Malfunction by reverse phase/
open-phase
Error code Detailed error
code
U2 00
U3 00
U4 00
U5 00
U6 36
U7 00
U8 01
U8 02
U8 03
U8 04
U8 05
U8 06
U8 07
U8 08
UA 00
UA 16
UA 17
UA 21
UA 22
UA 52
UF 00
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.
EPGA11~16DAV3 + EAVZ16S18+23DA6V+9W
Description
OU: Defect of power supply
voltage
Under floor heating screed dryout
function not completed correctly
Indoor/outdoor unit
communication problem
User interface communication
problem
Boiler standby abnormality
OU: Transmission malfunction
between main CPU- INV CPU
Connection with LAN adapter lost
Connection with room thermostat
lost
No connection with room
thermostat
Unknown USB device
File malfunction
Boiler communication error
P1P2 communication error
Boiler communication error
Indoor unit, outdoor unit matching
problem
Extension/hydro communication
problem
Tank type problem
Extension/hydro mismatch
problem
Communication problem between
control box and option box
Boiler, indoor unit matching
problem
Reversed piping or bad
communication wiring detection
Daikin Altherma – Low temperature split
4P556075-1 – 2019.02