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Troubleshooting
Service manual
22
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
3.3.4 7H-06 – Water flow during cooling/defrost
Trigger
Effect
Reset
Water flow abnormality
determined mainly during
cooling or defrost
operation.
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 cooling circuit.
1
Check that all stop valves of the water circuit are open. See
265].
Possible cause:
Closed stop valve in the water circuit.
2
Possible cause:
Air in the water circuit.
3
Possible cause:
Water flow is too low.
4
Possible cause:
Water pressure is too low.
5
Check if a by‑pass is installed in the water circuit. See
265].
Possible cause:
No by‑pass installed in the water circuit.
6
Perform an electrical check of the water flow sensor. See
Possible cause:
Faulty water flow sensor.
7
Perform a check of the 3-way valve. See
99].
Possible cause:
Faulty 3‑way valve.
8
Perform a check of the water pump. See
245].
Possible cause:
Faulty water pump.
9
Perform a check of the hydro PCB. See
Possible cause:
Faulty hydro PCB.
10
Perform a check of the backup heater. See
Possible cause:
Faulty backup heater.
11
If installed, perform a check of the booster heater. See
Possible cause:
Faulty booster heater.
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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