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Troubleshooting
Service manual
72
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see
254].
7
Check that the thermal interface grease is applied properly on the (PCB or
refrigerant piping) contact surface of the heat sink. Adjust if needed.
Possible cause:
Thermal interface grease NOT applied properly on the heat
sink.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.3.79 U5-00 – User interface communication problem
Trigger
Effect
Reset
Communication failure
between unit and user
interface.
Unit will stop operating.
Automatic reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the hydro PCB. See
Possible cause:
Faulty hydro PCB.
2
Check if the remote controller user interface functions correctly. See
234].
Possible cause:
Faulty remote controller user interface.
3
Check the communication wiring between the remote controller and the unit.
See
Possible cause:
Faulty wiring between the remote controller and the unit.
4
Check if the power supply is compliant with the regulations. See
254].
Possible cause:
▪
Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪
Power drop,
▪
Short circuit.
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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