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Motor will not rotate when restarting, it powers up but seems to be locked

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Check the blow down. The pipe from the pump going to the reciever should vent down when it stops. If it doesn't the unit will attempt to start against a pressure which will stall it. There is a check valve on the tank stopping air coming back and a small pipe should go from this to the pressure swich. The pressure switch when the unit stops opens the line to atmosphere and as long as the non return valve works it will vent down the line so the pump can start freely. If you have a constant his of air from the pressure switch when it stops it meant the non return valve is passing back. You can test this theroy by manualy venting the line when the unit stops.

Posted on Sep 05, 2014

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Since you have not listed the make or model compressor, I'll try to answer your question........ Is the compressor wired up correctley?
If the compressor is out of phase, it won't be able to perform at its peak level. Most 60-80 gallon compressores require at least 220-240 volts to operate creectly. Make sur all your presure switches are calibrated to the correct unit and the compressor should run wirtth no problems. Hope this helps.......................

Posted on Mar 19, 2014

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Posted on Jan 02, 2017

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Here's the info from the service manual

"Fault Code: F9

Likely Failure Condition/Cause:
1. Door motor failure / jammed. Latch
motor switch failure.
2. Control software failure, or component
failure (relay stuck).
3. Wiring Problem.

Suggested Corrective Action:
1. Press CLEAR key.
2. If CLEAR key does not eliminate problem, turn off power for
30 seconds, then turn on power.
3. Check wiring of Lock Motor, and Lock Switch A and Door
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4. Unplug P4, apply power (L1) directly to the Lock Motor, if the
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LE
LOCKED MOTOR ERROR


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Random electrical problems, sometimes it works beautifully, sometimes not!


F11 = Communication between the Central Control Unit (CCU) and the
Motor Control Unit (MCU) cannot be sent correctly.
.
1. Unplug washer or disconnect power.
2. Check wire harness connections to the MCU, the motor, and
Central Control Unit (CCU).
3. Check the drive system for any worn or failed components.
4. Plug in washer or reconnect power.
5. Verify CCU operation by running a Diagnostic test or any
cycle.
6. Check the MCU by looking for operations of the drive motor.
7. Check the drive motor for powered rotations.
8. Check that the serial harness at the MCU is not mounted
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FDL=
A Door Lock Error occurs if the door cannot be locked. It will try to lock
it six times before displaying the error code.
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porte. Le système effectue six tentatives de verrouillage avant d’afficher le code d’erreur.
■ Door lock mechanism is broken or removed from door.
■ Door switch/lock unit failure.
1. Unplug washer or disconnect power.
2. Check door switch/lock unit.
3. Check the wire harness connections to the door
switch/lock unit and Central Control Unit (CCU).

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