Std Compressor Motor Overcurrent/Lock - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller
2.7

STD Compressor Motor Overcurrent/Lock

E6
Remote
Controller
Display
Applicable RQYQ10P~16PY1B
Models
Method of Error Detects the overcurrent with current sensor (CT).
Detection
Error Decision Error is decided when the detected current value exceeds 28.8 A for 2 seconds.
Conditions
Supposed
Causes
Troubleshooting
Note:
*1. One of the possible factors may be chattering due to rough MgS contact.
*2. Abnormal case
112
Stop valve is not opened
Obstacles at the air outlet
Improper power supply voltage
Defective magnetic switch
Defective compressor
Defective current sensor (A6P, A8P)
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the stop valve open?
YES
Obstacle
exists around
the air outlet.
NO
Is the power
supply voltage
normal?
YES
Is the magnetic
switch (K2M, K3M)
normal? (*1)
YES
Check the wiring from power supply ~ current sensor (A6P, A8P) ~
MgS (K2M, K3M) ~ compressor
Is above
wiring
correct?
YES
Is current
sensor
correct? (*2)
YES
The current sensor value is 0 during STD compressor operation.
The current sensor value is more than 15.0A during STD compressor stop.
NO
YES
NO
NO
NO
NO
SiBE341027
Open the stop valve.
Remove the obstacle.
Correct the power supply
voltage.
Replace the magnetic
switch.
Correct wiring.
Replace the corresponding
current sensor
(A6P or A8P).
Replace the compressor.
Service Diagnosis