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12 Troubleshooting
Installer reference guide
81
EPGA11~ EABH/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
.
Summary of Contents for Altherma EABH-D6V
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