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Troubleshooting
Service manual
35
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
3.3.24 AC-00 – Booster heater overheated
Trigger
Effect
Reset
Bridge connection over
booster heater contact is
NOT made.
Unit will NOT stop
operating.
Manual reset via user
interface when bridge
connection is made.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check that the bridge connector is correctly connected to X21A of the hydro
PCB. See
281].
Possible cause:
Open jumper on X21A on hydro PCB.
2
Perform a check of the hydro PCB. See
175].
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.3.25 AH-00 – Tank disinfection function not completed correctly
Trigger
Effect
Reset
Disinfection setpoint is
NOT reached within
6 hours or NOT kept for
the required time.
Unit will NOT stop
operating.
Automatic reset when
disinfection is completed.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check when the disinfection is scheduled. Schedule it when there is little
chance that water will be tapped so that the disinfection can finish in time.
Possible cause:
Large quantity of hot water has been tapped during/before
disinfection.
2
Check the backup heater settings [2‑00] to [2‑04] and [4‑00]. See
Possible causes:
▪
Backup heater is restricted during disinfection,
▪
Backup heater NOT allowed.
3
Check the domestic hot water tank and booster heater related settings. See
Possible cause:
Faulty booster heater settings.
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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