12 Troubleshooting
Installer reference guide
84
EKCB
EK2CB EKMBU EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
Error code
Detailed error
code
Description
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.
Hydro part
Error code
Detailed error
code
Description
A1
00
Zero cross detection problem.
Power reset required.
Please contact your dealer.
AA
01
Backup heater overheated.
Power reset required.
Please contact your dealer.
UA
00
Hydro part / refrigerant part
matching problem.
Power reset required.
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/cooling
circuit.
7H
06
Water flow problem during
cooling/defrost.
Manual reset.
Check the plate heat exchanger.
Error code
Detailed error
code
Description
89
01
Heat exchanger frozen.
8H
00
Abnormal increase outlet
water temperature.
8F
00
Abnormal increase outlet
water temperature (DHW).
C0
00
Flow sensor malfunction.
Manual reset.
C0
01
Flow switch malfunction.
Auto reset.
C0
02
Flow switch malfunction.
Manual reset.
U3
00
Under floor heating screed
dryout function not completed
correctly.
81
00
Leaving water temperature
sensor problem.
Please contact your dealer.
C4
00
Heat exchanger temperature
sensor problem.
Please contact your dealer.
80
00
Returning water temperature
sensor problem.
Please contact your dealer.
U5
00
User interface
communication problem.
U4
00
Hydro part / refrigerant part
communication problem
AC
00
Booster heater overheated.
Please contact your dealer.
EC
00
Abnormal increase tank
temperature.
HC
00
Tank temperature sensor
problem.
Please contact your dealer.
CJ
02
Room temperature sensor
problem.
Please contact your dealer.
H1
00
External temperature
sensor problem.
Please contact your dealer.
89
02
Heat exchanger frozen.
Содержание EK2CB07CAV3
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