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Third party components
Service manual
118
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
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
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
119].
To check the power supply to the indoor unit
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Remove the required plate work, see
94].
2
Check that the power supply cables and earth connection are firmly fixed to
the indoor unit power supply terminal X1M.
3
Turn ON the power using the respective circuit breaker.
4
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?
Action
Yes
Return to the troubleshooting of the
specific error and continue with the
next procedure.
No
Continue with the next step.
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