Daikin Altherma 3 M - Third Party Components; Electrical Circuit; Checking Procedures

4 | Third party components
Service manual
284
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
4 Third party components
4.1 Electrical circuit
4.1.1 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 "3.17Plate work"[4230].
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 using the respective circuit breaker.
For single phase units
4 Measure the voltage between L and N on the power supply terminal X1M. The
voltage MUST be 230VAC ± 10%.
For three‑phase units
5 Measure the voltage between the phases L1‑L2‑L3 on the power supply
terminal X1M. The voltage MUST be 400VAC ± 10%.
6 Measure the voltage between L1 and N on the power supply terminal X1M.
The voltage MUST be 230VAC ± 10%.
7 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
"4.1.2Repair procedures"[4286].
To check if the power supply is conform with the regulations
1 Check that the power source is in line with the requirements described in the
databook.
Is the power supply conform 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
"4.1.2Repair procedures"[4286].