Third Party Components; Electrical Circuit; Checking Procedures - Daikin Emura RXJ20A5V1B Service Manual

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Third party components

5 Third party components

5.1 Electrical circuit

5.1.1 Checking procedures

To check the power supply of the unit
To check the power supply to the indoor unit
Service manual
180
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
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?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Remove the required plate work, see
2 Check that the power supply cables and earth connection are firmly fixed to
the indoor unit power supply terminal X1M.
3 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.
4 Turn ON the power using the respective circuit breaker.
5 Measure the voltage between L and N on the indoor unit power supply
terminal X1M.
Result: The voltage MUST be 230 V AC ± 10%.
Is the measured voltage (power supply)
correct?
Yes
"4.14 Plate work" [
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Adjust the power supply, see
"5.1.2 Repair procedures" [
4
"4.14 Plate work" [ 144].
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
RXJ20~50A + FTXJ-A(W)(S)(B)
4
144].
4
181].
Split Emura 3 R32
ESIE22-04B – 2022.08