A1-01 - Eeprom Abnormality; A5-00 - Cooling High Pressure Abnormality; Backup Heater Overheating - Daikin Altherma EBLQ011CAV3 Service Manual

INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
1 Perform a check of the main PCB. See
page 66.
Possible cause: Faulty main PCB.
2 Perform a check of the inverter PCB. See
PCB" on page 61.
Possible cause: Faulty power module = inverter PCB.
3 Check if the power supply is conform with the regulations. See
"3.1 Power supply" on page 91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.16 A1-01 – EEPROM abnormality
Trigger Effect
Hydro PCB detects Unit will stop
EEPROM operating.
abnormality.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the hydro PCB. See
page 58.
Possible cause: Faulty hydro PCB.
2 Check if the power supply is conform with the regulations. See
"3.1 Power supply" on page 91.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.17 A5-00 – Cooling high pressure
abnormality
Trigger Effect
Heat exchanger Unit will stop
thermistor measures operating.
a temperature below
0°C, 15 times in
300 minutes.
Condensing
temperature reaches
59.5°C (saturated
condensing
temperature), 15
times in 300 minutes.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
To solve the error code
"2.17 Main PCB" on
1 Check the water pressure. See
"2.15 Inverter
2 Check the water flow. See
3 Check that all stop valves of the water circuit are open. See
4 Perform a check of the air purge valves. See
5 Perform a check of the outdoor air thermistor. See
6 Perform a check of the expansion valve. See
Reset
7 Perform a check of the refrigerant circuit. See
Manual reset via user
interface.
Power reset via
outdoor unit.
"2.14 Hydro PCB" on
1.4.18
Trigger
Thermal protector is
activated. Measured
water temperature
>90°C.
To solve the error code
Reset
Manual reset via user 1 Check the water pressure. See
interface.
2 Check the water flow. See
3 Perform a check of the air purge valves. See
INFORMATION
It is recommended to perform the checks in the listed
order.
"3.3 Water circuit" on
Possible cause: Water pressure is too low.
"3.3 Water circuit" on
Possible cause: Water flow is too low.
"3.3 Water circuit" on page 95.
Possible cause: Closed stop valve in the water circuit.
circuit" on page 95.
Possible cause: Air in the water circuit.
"2.23 Thermistors" on page 82.
Possible cause: Faulty outdoor air thermistor.
valve" on page 54.
Possible cause: Faulty expansion valve.
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.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
AA-01 – Backup heater overheating
Effect
Unit will stop
operating.
INFORMATION
It is recommended to perform the checks in the listed
order.
INFORMATION
In case of preferential kWh rate, the indoor unit also needs
a power reset.
"3.3 Water circuit" on
Possible cause: Water pressure is too low.
"3.3 Water circuit" on
Possible cause: Water flow is too low.
circuit" on page 95.
Possible cause: Air in the water circuit.
1 Troubleshooting
page 95.
page 95.
"3.3 Water
"2.11 Expansion
"3.2 Refrigerant
Reset
Power reset via
outdoor unit.
page 95.
page 95.
"3.3 Water
Service manual
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