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Troubleshooting
Service manual
13
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
2.3.3 7H-05 – Water flow problem during 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
Possible cause:
Closed stop valve in the water circuit.
2
Purge the water circuit. See
299].
Possible cause:
Air in the water circuit.
3
Check the water flow. See
299].
Possible cause:
Water flow is too low.
4
Check the water pressure. See
299].
Possible cause:
Water pressure is too low.
5
Check if a by‑pass is installed in the water circuit. See
Possible cause:
No by‑pass installed in the water circuit.
6
Perform an electrical check of the water flow sensor. See
268].
Possible cause:
Faulty water flow sensor.
7
Perform a check of the 3-way valve. See
Possible cause:
Faulty 3‑way valve.
8
Perform a check of the water pump. See
Possible cause:
Faulty water pump.
9
Perform a check of the hydro PCB. See
160].
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
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