Daikin Altherma EBLQ011CA3V3 - 04 - Abnormal Flow (Domestic Hot Water); 05 - Abnormal Flow (Heating;Sampling)

1 Troubleshooting
Service manual
5
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
8 Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9 Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 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.
1.4.2 7H-04 – Abnormal flow (domestic hot
water)
Trigger Effect Reset
Water flow
abnormality
determined mainly
during domestic hot
water.
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.
NOTICE
Focus the troubleshooting on the domestic hot water
circuit.
1 Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2 Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3 Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4 Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5 Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6 Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7 Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
8 Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9 Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 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.
1.4.3 7H-05 – Abnormal flow (Heating/sampling)
Trigger Effect Reset
Water flow
abnormality
determined mainly
during space heating.
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.
NOTICE
Focus the troubleshooting on the space heating circuit.
1 Check that all stop valves of the water circuit are open. See
"3.3Water circuit"on page95.
Possible cause: Closed stop valve in the water circuit.
2 Perform a check of the air purge valves. See "3.3 Water
circuit"on page95.
Possible cause: Air in the water circuit.
3 Check the water flow. See "3.3Water circuit"on page95.
Possible cause: Water flow is too low.
4 Check the water pressure. See "3.3Water circuit"on page95.
Possible cause: Water pressure is too low.
5 Check the water volume. See "3.3Water circuit"on page95.
Possible cause: Water volume is too low.
6 Check if a by‑pass is installed in the water circuit. See
"3.3Water circuit"on page95.
Possible cause: No by‑pass installed in the water circuit.
7 Clean the water filter. See "4Maintenance"on page99.
Possible cause: Faulty or dirty water filter.
8 Perform an electrical check of the water flow sensor. See
"2.25Water flow sensor"on page87.
Possible cause: Faulty water flow sensor.
9 Perform a check of the 3-way valve. See "2.13-way valve" on
page35.
Possible cause: Faulty 3‑way valve.
10 Perform a check of the water pump. See "2.26Water pump"on
page89.
Possible cause: Faulty water pump.
11 Perform a check of the hydro PCB. See "2.14 Hydro PCB"on
page58.
Possible cause: Faulty hydro PCB.