J2" Outdoor Unit: Current Sensor Malfunction - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
J2
4.25 " " Outdoor Unit: Current Sensor Malfunction
J2
Remote
Controller
Display
Applicable RTSQ8P~16P (Outdoor Unit)
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 PCB
Defective compressor (M2C, M3C)
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 Page 216~217 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
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)
wire?
Troubleshooting by Indication on the Remote Controller
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 the compressor.
(STD compressor 1 or 2)
Mount the current sensor
correctly, and operate unit again.
Replace the current sensor or
outdoor unit PCB.
262