Daikin VRV X RXQ6-48ANR Series, Service Manual, Page: 226 / 297

Troubleshooting by Error Code SiME341909EA
220 Part 6 Service Diagnosis
5.41 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
The current instantaneously exceeds A (A) in the power transistor.
Trigger point
Supposed
Causes
 Defective compressor coil (such as wiring disconnection or insulation failure)

Compressor startup failure (mechanical lock)
 Defective inverter PCB
Troubleshooting
Compressor model A (A)
JT1GUVDYR 41.9
JT16KCVDYR 64.2
Power OFF
Open the stop valve.
YES
NO
Is the stop valve open?
YES
YES
Are
wiring and wire
connections to the relevant
compressor
normal?
Rectify the wiring and
wire connections.
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
For the models equipped with
2 compressors, check the
compressor M1C or M2C
applicable to the error code
L5
while in monitor mode of the
outdoor unit.
Check in Monitor Mode
Check for the leads of the
compressor.
• For compressor M1C
• For compressor M2C
Are the
leads of the relevant
compressor normal?
Replace the leads of the
relevant compressor.
NO
A
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