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5
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Third party components
Service manual
254
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
5 Third party components
5.1 Electrical circuit
5.1.1 Checking procedures
To check the power supply of the unit
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
202].
1
Check that the power supply cables and earth connection are firmly fixed to
the power supply terminal X1M.
2
Measure the insulation resistance between each power supply terminal and
the ground using a megger device of 500 V DC. All measurements MUST be
>1MΩ. If insulation resistance is <1MΩ, earth leakage is present.
3
Turn ON the power of the unit.
4
Measure the voltage between L and N on the power supply terminal X1M.
Result:
The voltage MUST be 230 V AC ± 10%.
5
Unbalance between the phases MUST NOT exceed 2%.
Is the measured voltage (power supply)
correct?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Adjust the power supply, see
256].
To check if the power supply is compliant with the regulations
1
Check that the power source is in line with the requirements described in the
databook.
Is the power supply compliant with the
regulations?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Adjust the power supply, see
256].
To prevent electrical hazards
To check the rectifier voltage
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
202].
draft – 31/05/2022 15:53
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