Daikin Altherma EBLQ011CA3V3 - C0-00 - Flow Sensor Malfunction; C0-01 - Flow Switch Malfunction; C0-02 - Flow Switch Malfunction

1 Troubleshooting
Service manual
11
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Possible cause: Faulty hydro PCB.
4 Perform a check of the 3-way valve. See "2.13-way valve" on
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 page95.
Possible cause: Leaking field installed domestic hot water
tap.
6 Check the settings of the backup heater [4‑00]. See "2.24User
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 page87.
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 Reset
Water flow sensor
detects water flow
45seconds after the
water pump has
stopped.
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 pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
4 Check the water circuit for an external pump. See "3.3 Water
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 page87.
Possible cause: Faulty water flow sensor.
6 To check for the presence of an external source of vibration.
See "3.5External factors"on page98.
Possible cause: The detected water flow is caused by an
external source of vibration.
7 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
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.
1.4.23 C0-01 – Flow switch malfunction
Trigger Effect Reset
Unit detects flow via
flow switch when
pump is not running.
Unit will stop
operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
4 Check the water circuit for an external pump. See "3.3 Water
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 page87.
Possible cause: Faulty water flow sensor.
6 To check for the presence of an external source of vibration.
See "3.5External factors"on page98.
Possible cause: The detected water flow is caused by an
external source of vibration.
7 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
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 Reset
Unit detects flow via
flow switch when
pump is not running.
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 pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
2 Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
3 Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.