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Troubleshooting
Service manual
19
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
3.3 Error based troubleshooting
INFORMATION
No separate indoor unit is present in the installation.
When a reference is made to the indoor unit, it refers to the hydrobox of the unit.
3.3.1 7H-01 – Water flow problem
Trigger
Effect
Reset
System detects flow
abnormality during
operation.
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 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
265].
Possible cause:
Air in the water circuit.
3
Check the water flow. See
265].
Possible cause:
Water flow is too low.
4
Check the water pressure. See
265].
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
Clean the integrated filter of the shut‑off valve. See
Possible cause:
Dirty filter in the shut‑off valve.
7
Perform an electrical check of the water flow sensor. See
237].
Possible cause:
Faulty water flow sensor.
8
Perform a check of the 3-way valve. See
Possible cause:
Faulty 3‑way valve.
9
Perform a check of the water pump. See
Possible cause:
Faulty water pump.
10
Perform a check of the hydro PCB. See
175].
Possible cause:
Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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