![background image](http://html1.mh-extra.com/html/daikin/comfora-xp-series/comfora-xp-series_service-manual_4699221128.webp)
4
|
Third party components
Service manual
128
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 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
100].
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
129].
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
100].
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.
5
Summary of Contents for Comfora XP Series
Page 170: ......
Page 171: ......
Page 172: ...ESIE18 01D 2022 02 Copyright 2019 Daikin Verantwortung f r Energie und Umwelt...