Daikin D2C18ND024A5AA Manuel D'utilisation page 11

# Problem
8H-64 Flow temperature Make sure radiator valves are open
steep rise enough to circulate water. Your
boiler will operate again after a while.
If problem repeats, contact your
service agent.
8H-65 Flow-return Make sure radiator valves are open
temperature enough to circulate water. If problem
difference too much repeats, contact your service agent.
E1-64 Flame detection Perform reset. If problem repeats,
before burner contact your service agent.
operation
E1-65 Internal SCOT Perform reset if needed. If problem
system error repeats, contact your service agent.
E1-66 Calibration conditions No reset needed. Wait burner to
fault restart. If problem repeats, contact
your service agent.
E1-67 Missing calibration Perform reset. If problem repeats,
contact your service agent.
E1-68 Ion base value is Perform reset. If problem repeats,
outside the factory contact your service agent.
limits or saved
incorrectly
E1-69 Parameter CRC error Perform reset. If problem repeats,
contact your service agent.
E1-70 Parameter CRC error Perform reset. If problem repeats,
contact your service agent.
E1-71 EK lockout failure Permanent error. Contact your
service agent.
E1-72 SCOT flame amplifier Perform reset if needed. If problem
repeats, contact your service agent.
E1-73 Internal PCB error Perform reset if needed. If problem
repeats, contact your service agent.
H9-01 Outside sensor fault Boiler continues operation but
outside sensor is defective. Contact
your service agent.
HC-01 Domestic hot water Boiler continues operation but you
temperature sensor must contact your service agent.
fault
HJ-08 High system pressure Discharge water down to 0.8 bar.
(You can bleed the radiators.)
HJ-09 Low system pressure Increase the system pressure to
0.8 bar
HJ-10 Water pressure Contact your service agent.
sensor fault
J6-01 Flow temperature ▪ Check the valves of the radiators
sensor overheating
(Can be a blocking ▪ Check the combi boiler water
error or a lockout
error)
▪ Perform reset if needed. If problem
J6-20 Return temperature Perform reset if needed. If problem
sensor overheating repeats, contact your service agent.
(Can be a blocking
error or a lockout
error)
J6-21 Return temperature is No reset needed, burner operates
higher than flow itself after a small amount of time. If
temperature problem repeats, contact your
service agent.
JJ-64 Flue temperature Perform reset. If problem repeats,
sensor fault contact your service agent.
D2C18ND024A5AA + D2HND012/18A5AA
Wall-mounted condensing boiler
3P469438-9H – 2018.05
Solution
in the heating circuit.
pressure. If it is low, fill the heating
circuit with water.
repeats, contact your service
agent.
# Problem
U2-01 Supply voltage is Contact your service agent.
below low limit
U2-01 Supply voltage is Your boiler will continue operation
above high limit but you must contact your service
agent.
U4-65 Opentherm room Your boiler will continue operation
thermostat but Opentherm room thermostat is
connection is out of operation. Contact your
defective service agent.
U4-66 CAN-bus timeout If problem repeats, contact your
service agent.
U4-67 Remote reset Switch off - switch on power mains. If
supervision problem repeats, contact your
service agent.
UA-64 Blocking during BCC Contact your service agent.
update process
UA-65 PCB requires a BCC Contact your service agent.
update
UA-66 BCC-ID of internal Contact your service agent.
EEPROM is
inconsistent
UA-67 BCC is missing Contact your service agent.
UA-68 BCC is not Contact your service agent.
compatible with PCB
(BCC-ID)
UA-69 BCC is not Contact your service agent.
compatible with PCB
(firmware)
UA-70 BCC update error Contact your service agent.
UH-08 Date and time are not If energy metering function is
set interrupted or not started, date and
time must be set to resume. Set the
date and time from t parameters
("3.5.3 User settings menu" on
page 8)
7 Error codes
Solution
Operation manual
11