Water Heat Exchange Freezing Abnormality; 00 - Backup Heater Outlet Water Temperature Increase (During Domestic Hot Water Without Booster Heater) - Daikin Altherma EBLQ011CAV3 Service Manual

2 Perform a check of the hydro PCB. See
page 58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.8 89-01 – Water heat exchange freezing
abnormality
Trigger Effect
Warning 89‑02 or Unit will stop
89‑03 occurred 3 operating.
times, with less than
30 minutes between
each warning.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the heat exchanger thermistor. See
"2.23 Thermistors" on page 82.
Possible cause: Faulty heat exchanger thermistor.
2 Perform a check of the hydro PCB. See
page 58.
Possible cause: Faulty hydro PCB.
3 Perform a check of the refrigerant circuit. See
circuit" on page 92.
Possible cause:
▪ Stop valve is closed,
▪ Clogged refrigerant circuit,
▪ Refrigerant circuit NOT charged correctly,
▪ Humidity in the refrigerant circuit,
▪ Non-condensables in the refrigerant circuit,
▪ Leaking refrigerant circuit.
4 Check the water flow. See "3.3 Water circuit" on
Possible cause: Water flow is too low.
5 Check the water pressure. See
Possible cause: Water pressure is too low.
6 Check the water volume. See
Possible cause: Water volume is too low.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.9 89-02 – Water heat exchange freezing
abnormality
Trigger Effect
Condensing Unit will stop
temperature <0°C operating.
during space heating.
Liquid refrigerant
thermistor ≤0°C
during space heating
or domestic hot
water.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
"2.14 Hydro PCB" on
Reset
Manual reset via user
interface.
"2.14 Hydro PCB" on
"3.2 Refrigerant
page 95.
"3.3 Water circuit" on page 95.
"3.3 Water circuit" on page 95.
Reset
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the 4‑way valve. See
page 38.
Possible cause: Faulty 4‑way valve.
2 Perform a check of the main PCB. See
page 66.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.10 89-03 – Water heat exchange freezing
abnormality
Trigger Effect
Evaporation Unit will NOT stop
temperature is too operating.
low during defrost.
Outlet water after
plate type 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 plate type heat
exchanger thermistor. See
Possible cause: Faulty outlet water after plate type heat
exchanger thermistor.
2 Perform a check of the hydro PCB. See
page 58.
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.11 8F-00 – Backup heater outlet water
temperature increase (during domestic
hot water without booster heater)
Trigger Effect
Outlet water after Unit will stop
backup heater operating.
thermistor detects
temperature >75°C
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
"3.3 Water circuit" on page 95.
1 Troubleshooting
"2.2 4-way valve" on
"2.17 Main PCB" on
Reset
Automatic reset.
"2.23 Thermistors" on page 82.
"2.14 Hydro PCB" on
Reset
Manual reset via user
interface.
Service manual
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