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I would have to know just what you mean by "it tries to come on". Reason being, A/C's are a little to complicated to diagnose in this fourm with no more information than is given. I would have to know just what you mean by "it tries to come on". Reason being, A/C's are a little to complicated to diagnose in this fourm with no more information than is given.
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F70 error code indicates Central control unit heartbeat failure. If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the Central Control Unit to the User Interface.
1. Check for continuity of the User Interface harness.
2. Check wire harness connections to the User Interface and the Central Control Unit.
3. Replace User Interface if drum is rotating.
4. Replace Central Control Unit if drum is not moving
Error code F70 means no communication is detected from the Central Control Unit (CCU) to the User Interface while F71 is the reverse; no communication detected from the User Interface to the Central Control Unit (CCU). This could simply mean a loose or poor connection between the two communicating boards.
Disconnect power to the washer prior to servicing to avoid the risk of electric shock.
Remove the three screws attaching the top panel to the rear of the washer then slide the panel rearward and lift it off the washer.
Disconnect the User Interface ribbon connector from the left side of the Central Control Unit (CCU) and clean the connector and terminals thoroughly. Reseat the connector several times to ensure a good connection between the Central Control Unit (CCU) and the User Interface.
It is highly recommended to clean and reseat every wiring harness connector from the Central Control Unit (CCU) to prevent the same problem in the near future.
Reconnect every wiring harness to the CCU and make sure all connectors are firmly seated. Slide the top panel back into position and secure it to the rear of the washer with the screws previously removed.
Let us know if the problem persists for further assistance. We will be happy to resolve your problem.
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I would have to know just what you mean by "it tries to come on". Reason being, A/C's are a little to complicated to diagnose in this fourm with no more information than is given.
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