Current Sensor Abnormality - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

SiBE341027

2.17 Current Sensor Abnormality

J2
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error Error is detected from the current value detected by current sensor.
Detection
Error Decision When the current value detected by current sensor becomes 5A or less, or 40A or more during
STD compressor operation.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Defective current sensor (A6P, A8P)
Defective outdoor unit PCB
Defective compressor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the current sensor corresponding to the error code
J2
" " in the monitor mode.
Confirmation of error 4 shows as follows:
→ Current sensor for STD compressor 1
Confirmation of error 4 shows as follows:
→ Current sensor for STD compressor 2
Explanation for " "
Is the connector for
current sensor
connected to X25A,
X26A on outdoor unit
PCB (A1P)?
Are the current sensors
inversely connected to two
STD compressors?
Applicable compressor
coil wire is broken.
Is the current sensor
mounted on the T-phase
(A6P) and R-phase
(A8P) wire?
Master unit
Slave unit 1
Slave unit 2
System
NO
YES
YES
NO
YES
NO
NO
YES
Troubleshooting by Remote Controller
Connect the connector, and
operate unit again.
Correct the connections between
the current sensors and the STD
compressors.
Replace the compressor.
Mount the current sensor
correctly, and operate the unit
again.
Replace the current sensor.
↓ Retry
Replace the outdoor unit PCB.
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