Daikin VRV III-S RXYMQ36 48PVJU, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS34-907
176 Troubleshooting
Troubleshooting
N O
A
Po w er O N
Po w er OFF
Onsite ca u ses.
Make proper w ire connections
w itho u t open phase, erroneo u s
connections, or erroneo u s order
of phases.
Check for
po w er s u pply v oltage.
V oltage b et w een phases: 3 8 0 to
415 V Phase v oltage: 220
to 240 V
N O
Caution Be s u re to t u rn off the po w er s w itch b efore connecting or disconnecting the connector, or parts may b e damaged.
YES
Onsite ca u ses
Correct the u n b alanced loads to
eliminate the u n b alanced state.
Un b alanced v oltage w ill ca u se
extremely u n b alanced c u rrent,
th u s impairing the ser v ice life of
or res u lting in the malf u nction of
the e qu ipment.
Un b alanced
po w er s u pply? ( N ot more
than 2 % : Phase v oltage of not
more than approx.
5 V )
N O
YES
Replace the compressor.
The ins u lation
resistance is lo w (i.e., not more
than 100k
W
.)
YES
N O
Replace the fan motor.
Replace the fan dri
v er.
YES
The
ins u lation resistance is
lo w (i.e., not more than
1M
W
.)
N O
Replace the main PCB (A1P).
O
b ser v e the conditions of the
PCB.
In the case of a serio
u s
fail u re, a compressor fail u re
may ca u se the fail u re of the
PCB. E v en if the PCB is
replaced, it may ca u se fail u re
again.
To a
v oid that, recheck the
compressor for gro u nd and for
any b roken w ires.
N OTE: E v en after the
completion of PCB
replacement, check the
compressor.
Is the po w er
transistor failing?
YES
Check the in v erter po w er transistor.
Disconnect the ca b le from the
compressor, and then check the
compressor for the ins
u lation
resistance.
Disconnect the ca b le from the fan,
and then check the fan motor for the
ins
u lation resistance.