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Troubleshooting
Service manual
19
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.12 8H-00 – Abnormal increase outlet water temperature
Trigger
Effect
Reset
Outlet water after backup
heater thermistor detects
a too high temperature
during space heating
without electrical heater.
Unit will stop operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check the water circuit for an external heat source. See
Possible cause:
Increased water temperature due to an external heat source.
2
Perform a check of the outlet water after backup heater thermistor. See
248].
Possible cause:
Faulty outlet water after backup heater thermistor.
3
Perform a check of the backup heater. See
104].
Possible cause:
Faulty backup heater.
4
Perform a check of the hydro PCB. See
160].
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.13 8H-03 – Overheating water circuit (thermostat)
Trigger
Effect
Reset
Unit detects activated
aquastat.
Pump will stop running.
Automatic reset when the
circuit is closed.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check the set trigger temperature of the safety thermostat. See
307].
Possible cause:
Faulty trigger temperature setting of the safety thermostat.
2
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