Tank Disinfection Function Not Completed Correctly - Daikin altherma 3 M Service Manual

2 | Troubleshooting
2.3.19 AH-00 – Tank disinfection function not completed correctly
Service manual
24
7 If installed, perform a check of the booster heater. See
4
heater" [ 129].
Possible cause: Faulty booster heater.
8 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
9 Perform a check of the power supply, connections, wiring,... between the
outdoor unit and domestic hot water tank. See
Possible cause: Faulty wiring between the outdoor unit and domestic hot
water tank.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Disinfection setpoint is
NOT reached within
6 hours or NOT kept for
the required time.
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
4
interface" [ 266].
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
"3.21 User interface" [
Possible cause: Faulty booster heater settings.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
"3.12 Hydro
Effect
Unit will NOT stop
operating.
4
266].
"3.5 Booster
4
PCB" [ 160].
4
"4.1 Electrical circuit" [
Reset
Automatic reset when
disinfection is completed.
"3.21 User
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
284].