Daikin Altherma EHVZ04S18DA6V, Installer'S Reference Manual

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12 Troubleshooting
Installer reference guide
80
ERGA04~08DAV3(A) + 08S18+23DA
Daikin Altherma – Low temperature split
4P495249-1 – 2017.12
Error code Detailed error
code Description
F6 00 OU: Abnormal high pressure in
cooling
FA 00 OU: Abnormal high pressure,
actuation of HPS
JA 00 OU: Malfunction of high pressure
sensor
J3 00 OU: Malfunction of discharge
pipe thermistor
J6 00 OU: Malfunction of heat
exchanger thermistor
J6 07 OU: Malfunction of heat
exchanger thermistor
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)
P4 00 OU: Malfunction of radiating fin
temperature sensor
U0 00 OU: Shortage of refrigerant
U2 00 OU: Defect of power supply
voltage
U7 00 OU: Transmission malfunction
between main CPU- INV CPU
Error codes of the indoor unit
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
How an error code can be reset will be displayed on the
user interface connected on the indoor unit.
Error code Detailed error
code Description
7H 01 Water flow problem
7H 04 Water flow problem during
domestic hot water production
Error code Detailed error
code Description
7H 05 Water flow problem during
heating/sampling
7H 06 Water flow problem during
cooling/defrost
7H 07 Water flow problem. Pump
deblocking active
80 00 Returning water temperature
sensor problem
81 00 Leaving water temperature
sensor problem
81 01 Mixed water thermistor
abnormality.
89 01 Heat exchanger frozen
89 02 Heat exchanger frozen
89 03 Heat exchanger frozen
8F 00 Abnormal increase outlet water
temperature (DHW)
8H 00 Abnormal increase outlet water
temperature
8H 01 Overheating mixed water circuit
8H 02 Overheating mixed water circuit
(thermostat)
8H 03 Overheating water circuit
(thermostat)
AA 01 Backup heater overheated
AA 02 External backup heater
overheated
AH 00 Tank disinfection function not
completed correctly
AJ 03 Too long DHW heat-up time
required
C0 00 Water flow detected while pump
is OFF
C0 01 Flow switch malfunction
C0 02 Flow switch malfunction
C4 00 Heat exchanger temperature
sensor problem
CJ 02 Room temperature sensor
problem
EC 00 Abnormal increase tank
temperature
EC 04 Tank preheating
H1 00 External temperature sensor
problem
HC 00 Tank temperature sensor
problem
HC 01 Second tank temperature sensor
problem
HJ 10 Water pressure sensor
abnormality
JA 17 Refrigerant pressure sensor
abnormality
U3 00 Under floor heating screed dryout
function not completed correctly
U4 00 Indoor/outdoor unit
communication problem
U5 00 User interface communication
problem
U8 01 Connection with LAN adapter lost