Daikin REYQ72, Serveice Manual

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Troubleshooting by Indication on the Remote Controller SiUS39-602
146 Troubleshooting
2.17
“
E6
”
Compressor Motor Overcurrent/Lock (STD Compressor)
Remote
Controller
Display
E6
Applicable
Models REYQ72M, 96M
Method of
Malfunction
Detection Detects the overcurrent with current sensor (CT).
Malfunction
Decision
Conditions Malfunction is decided when the detected current value exceeds the below mentioned value for
2 seconds.
„
200 V unit : 34.0 A
Supposed
Causes
„
Closed stop value
„
Obstacles at the discharge port
„
Improper power voltage
„
Faulty magnetic switch
„
Faulty compressor
„
Faulty current sensor
Troubleshooting
Note: Abnormal case
„
The current sensor value is 0 during STD compressor operation.
„
The current sensor value is more than 15.0A during STD compressor operation.
Is the stop valve open?
NO
Obstacle
exists around the air
discharge port.
YES
Is the power
supply voltage
normal?
NO
NO
NO
YES
NO
Is the
magnetic switch
(K2M, K3M)
normal?
Is
above wiring
correct?
NO
Is
current sensor
correct?
Check the wiring from power supply ~ current sensor (A5P, A6P) ~
MgS (K2M, K3M) ~ compressor
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Open the stop valve.
Remove the obstacle.
Correct the power voltage.
Replace the magnetic
switch.
Correct wiring.
Replace the corresponding
current sensor
(A5P or A6P).
Replace compressor.
(V3051)
YES
YES
YES
YES