Daikin VRV III REYQ8PY1, Service Manual

Page: 282 / 452

Si37-701 Troubleshooting by Indication on the Remote Controller
Troubleshooting 271
3.25
“
J2
”
Outdoor Unit: Current Sensor Malfunction
Remote
Controller
Display
J2
Applicable
Models REYQ8P~48P
Method of
Malfunction
Detection Malfunction is detected according to the current value detected by current sensor.
Malfunction
Decision
Conditions When the current value detected by current sensor becomes 5A or lower, or 40A or more during
standard compressor operation.
Supposed
Causes
„
Faulty current sensor (A6P, A8P)
„
Faulty outdoor unit PC board
„
Defective compressor
Troubleshooting
(V3071)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
current sensor
mounted on the T-phase
(A6P) and R-phase
(A8P) wire?
Are the
current sensors inversely
connected to two STD
compressors?
Is the
connector for
current sensor
connected to X25A, X26A
on outdoor unit
PC board
(A1P)?
Replace current sensor or outdoor
unit PC board.
Connect the connector, and
operate unit again.
NO
NO
Mount the current sensor
correctly, and operate unit again.
YES
Correct the connections between
the current sensors and the STD
compressors.
Applicable
compressor coil wire is
broken.
YES
Replace compressor.
NO
NO
YES
YES
Check the current sensor corresponding to the malfunction
code “
J2
” in the monitor mode.
(Refer to P226~227 for how to check)
Check 4 shows as follows:
→
Current sensor for constant rate compressor 1
Check 4 shows as follows:
→
Current sensor for constant rate compressor 2
Explanation for “ ”
Master unit
Slave unit 1
Slave unit 2
System