Heat Exchanger Frozen; 00 - Abnormal Increase Outlet Water Temperature (Domestic Hot Water) - Daikin altherma 3 M Service Manual

2 | Troubleshooting
2.3.10 89-03 – Heat exchanger frozen
2.3.11 8F-00 – Abnormal increase outlet water temperature (domestic hot water)
Service manual
18
Trigger
Evaporation temperature
is too low during defrost.
Outlet water after heat
exchanger thermistor
<6°C during defrost.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the outlet water after heat exchanger thermistor. See
"3.20 Thermistors" [
Possible cause: Faulty outlet water after heat exchanger thermistor.
2 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Outlet water after backup
heater thermistor detects
a too high temperature
during domestic hot
water without electrical
heater.
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
4
circuit" [ 299].
Possible cause: Increased water temperature due to an external heat source.
2 Perform a check of the outlet water after backup heater thermistor. See
"3.20 Thermistors" [
Possible cause: Faulty outlet water after backup heater thermistor.
3 Perform a check of the backup heater. See
Possible cause: Faulty backup heater.
4 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
Effect
Unit will NOT stop
operating.
4
248].
"3.12 Hydro
Effect
Unit will stop operating.
4
248].
"3.12 Hydro
Reset
Automatic reset.
4
PCB" [ 160].
Reset
Manual reset via user
interface.
4
"3.3 Backup heater" [ 104].
4
PCB" [ 160].
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
"4.3 Water