C0-00 - Flow Sensor Malfunction; C0-01 - Flow Switch Malfunction; C0-02 - Flow Switch Malfunction - Daikin Altherma EBLQ011CAV3 Service Manual

Possible cause: Faulty hydro PCB.
4 Perform a check of the 3-way valve. See
page 35.
Possible cause: Faulty 3‑way valve.
5 Check the installation for a leaking field installed domestic hot
water tap. See "3.3 Water circuit" on
Possible cause: Leaking field installed domestic hot water
tap.
6 Check the settings of the backup heater [4‑00]. See
interface" on page 87.
Possible cause: Backup heater NOT allowed.
7 Check the software and EEPROM version on the user interface
and hydro PCB. See "2.24 User interface" on
Possible cause: Mismatch between the software ID and
EEPROM on the hydro PCB or user interface.
8 Check that the domestic hot water consumption is NOT too
large. Lower if needed.
Possible cause: Domestic hot water consumption too large.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.22 C0-00 – Flow sensor malfunction
Trigger Effect
Water flow sensor Unit will stop
detects water flow operating.
45 seconds after the
water pump has
stopped.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the water pressure. See
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3 Water circuit" on
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See
circuit" on page 95.
Possible cause: Air in the water circuit.
4 Check the water circuit for an external pump. See
circuit" on page 95.
Possible cause: The detected water flow is caused by an
external pump.
5 Perform an electrical check of the water flow sensor. See
"2.25 Water flow sensor" on
Possible cause: Faulty water flow sensor.
6 To check for the presence of an external source of vibration.
See "3.5 External factors" on
Possible cause: The detected water flow is caused by an
external source of vibration.
7 Perform a check of the hydro PCB. See
page 58.
Possible cause: Faulty hydro PCB.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
"2.1 3-way valve" on
page 95.
"2.24 User
page 87.
Reset
Manual reset via user
interface.
"3.3 Water circuit" on page 95.
page 95.
"3.3 Water
"3.3 Water
page 87.
page 98.
"2.14 Hydro PCB" on
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
1.4.23 C0-01 – Flow switch malfunction
Trigger Effect
Unit detects flow via Unit will stop
flow switch when operating.
pump is not running.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the water pressure. See
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3 Water circuit" on
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See
circuit" on page 95.
Possible cause: Air in the water circuit.
4 Check the water circuit for an external pump. See
circuit" on page 95.
Possible cause: The detected water flow is caused by an
external pump.
5 Perform an electrical check of the water flow sensor. See
"2.25 Water flow sensor" on
Possible cause: Faulty water flow sensor.
6 To check for the presence of an external source of vibration.
See "3.5 External factors" on
Possible cause: The detected water flow is caused by an
external source of vibration.
7 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.
1.4.24 C0-02 – Flow switch malfunction
Trigger Effect
Unit detects flow via Unit will stop
flow switch when operating.
pump is not running.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the water pressure. See
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3 Water circuit" on
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See
circuit" on page 95.
1 Troubleshooting
Reset
Automatic reset.
"3.3 Water circuit" on page 95.
page 95.
"3.3 Water
"3.3 Water
page 87.
page 98.
"2.14 Hydro PCB" on
Reset
Manual reset via user
interface.
"3.3 Water circuit" on page 95.
page 95.
"3.3 Water
Service manual
11