Outdoor Unit: Current Sensor Malfunction; J2 " Outdoor Unit: Current Sensor Malfunction - Daikin VRV III REYQ8PY1 Service Manual

Si37-701
J2
" "
3.25

Outdoor Unit: Current Sensor Malfunction

J2
Remote
Controller
Display
Applicable REYQ8P~48P
Models
Method of Malfunction is detected according to the current value detected by current sensor.
Malfunction
Detection
Malfunction When the current value detected by current sensor becomes 5A or lower, or 40A or more during
standard compressor operation.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
Faulty current sensor (A6P, A8P)
Faulty outdoor unit PC board
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 malfunction
J2
code " " 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 " "
Is the
connector for
current sensor
connected to X25A, X26A
on outdoor unit
PC board
(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?
Troubleshooting by Indication on the Remote Controller
Master unit
Slave unit 1
Slave unit 2
System
NO
YES
YES
NO
YES
NO
NO
YES
Connect the connector, and
operate unit again.
Correct the connections between
the current sensors and the STD
compressors.
Replace compressor.
Mount the current sensor
correctly, and operate unit again.
Replace current sensor or outdoor
unit PC board.
(V3071)
271