Daikin REYQ8-48PY1B, Service Manual

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SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 292
3.20
“
E6
”
Outdoor Unit: STD Compressor Motor Overcurrent/
Lock
Remote
Controller
Display
E6
Applicable
Models REYQ8P~48P
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.
„
400 V unit : 15.0 A
Supposed
Causes
„
Closed stop value
„
Obstacles at the air outlet
„
Improper power voltage
„
Faulty magnetic switch
„
Faulty compressor
„
Faulty current sensor (A6P, A7P)
Troubleshooting
Note:
∗
1 One of the possible factors may be chattering due to rough MgS contact.
∗
2 Abnormal case
„
The current sensor value is 0 during STD compressor operation.
„
The current sensor value is more than 15.0A during STD compressor stop.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the stop valve open?
NO
Open the stop valve.
Obstacle exists
around the air outlet.
Is the power supply
voltage normal?
Is the magnetic
switch (K2M, K3M)
normal? (
∗
1)
Check the wiring from power supply ~ current sensor (A6P, A8P) ~
MgS (K2M, K3M) ~ compressor
Is above wiring
correct?
Is current sensor
correct?
∗
1
YES
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
Remove the obstacle.
Correct the power supply
voltage.
Replace the magnetic
switch.
Replace the corresponding
current sensor
(A6P or A8P).
Replace the compressor.
Correct wiring.