Daikin REYQ8-48PY1B, Service Manual

Page: 317 / 477

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 306
3.28
“
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 PCB
„
Defective compressor
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the current sensor corresponding to the malfunction
code “
J2
” in the monitor mode.
(Refer to P.255~P.256 for how to check.)
{
Confirmation of malfunction 4 shows as follows:
→
Current sensor for constant rate compressor 1
{
Confirmation of malfunction 4 shows as follows:
→
Current sensor for constant rate compressor 2
{
Explanation for “ ”
Master unit
Slave unit 1
Slave unit 2
System
Is the connector for
current sensor
connected to X25A,
X26A on outdoor unit
PCB (A1P)?
Connect the connector, and
operate unit again.
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?
NO
NO
YES
YES
YES
NO
YES
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 or
outdoor unit PCB.
NO