12 Troubleshooting
Installer reference guide
70
ERLQ004~008CA + 08S18CB
Daikin Altherma – Low temperature split
4P401676-1D – 2018.07
Error code
Detailed error
code
Description
J6
00
OU: Malfunction of heat
exchanger thermistor.
Please contact your dealer.
L3
00
OU: Electrical box temperature
rise problem.
Please contact your dealer.
L4
00
OU: Malfunction of inverter
radiating fin temperature rise.
Please contact your dealer.
L5
00
OU: Inverter instantaneous
overcurrent (DC).
Please contact your dealer.
P4
00
OU: Malfunction of radiating
fin temperature sensor.
Please contact your dealer.
U0
00
OU: Shortage of refrigerant.
Please contact your dealer.
U2
00
OU: Defect of power supply
voltage.
Please contact your dealer.
U7
00
OU: Transmission malfunction
between main CPU- INV CPU.
Please contact your dealer.
UA
00
OU: Indoor/outdoor combination
problem.
Power reset required.
Error codes of the indoor unit
Error code
Detailed error
code
Description
7H
01
Water flow problem.
Auto restart.
7H
04
Water flow problem during
domestic hot water production.
Manual reset.
Check the domestic hot water
circuit.
7H
05
Water flow problem during
heating/sampling.
Manual reset.
Check the space heating circuit.
7H
06
Water flow problem during
defrost.
Manual reset.
Check the plate heat exchanger.
Error code
Detailed error
code
Description
80
00
Returning water temperature
sensor problem.
Please contact your dealer.
81
01
Mixed water thermistor
abnormality.
Auto reset.
1
81
00
Leaving water temperature
sensor problem.
Please contact your dealer.
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.
Auto reset.
1
8H
02
Overheating mixed water circuit
(thermostat).
Auto reset.
1
8H
03
Overheating water circuit
(thermostat).
A1
00
Zero cross detection problem.
Power reset required.
Please contact your dealer.
A1
01
EEPROM reading error.
AA
01
Backup heater overheated.
Power reset required.
Please contact your dealer.
AH
00
Tank disinfection function not
completed correctly.
(1)
On the home screen of your user inter interface, the following information will be displayed:
Bi-zone kit abnormality
detection
Refer to bi-zone kit manual
Содержание Altherma EHVZ04S18CB
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