Daikin VRV RXYQ72-384XAYCA, Руководство по обслуживанию

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Troubleshooting by Error Code SiUS342004EB
311 Part 6 Service Diagnosis
3.51 Compressor Instantaneous Overcurrent
Applicable
Models
All outdoor unit models
Error Code
L5
Method of Error
Detection
Detect current flowing through the power transistor.
Error Decision
Conditions
When overcurrent flows instantaneously through the power transistor.
Supposed
Causes

Defective compressor coil (such as wiring disconnection or insulation failure)

Compressor startup failure (mechanical lock)

Defective inverter PCB
Troubleshooting
Power OFF
Open the stop v al v e.
YES
NO
Is the stop v al v e open?
YES
YES
Are
wiring and wire
connections to the rele v ant
compressor
normal?
Rectify the wiring and
wire connections.
NO
Caution
Be s u re to t u rn off the power switch b efore connecting or disconnecting
connectors, or parts may b e damaged.
Are the
leads of the rele v ant
compressor normal?
Replace the leads of the
rele
v ant compressor.
NO
A
Check the compressor ca b le
for disconnection and flaws.
NO
The
ins u lation
resistance of the rele v ant
compressor is 100 k
Ω
or less.
Replace the
compressor.
YES
The
internal wiring of
the compressor coil is
defecti v e.
Replace the
compressor.
YES
NO
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