Troubleshooting Checklists
Introduction
 DANGER |
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RISK OF ELECTROCUTION, ELECTRIC ARC, OR BURNS
Failure to follow these instructions will result in death or serious injury.
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When a problem is detected, go through the checklist and follow the instructions given.
Possible problems that could occur when using an FDM128 display are:
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Panel display is blank.
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Connected equipment cannot be used.
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Panel does not respond or responds slowly.
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Panel beeps when powered on.
Panel Display Is Blank
If the display is blank, perform the following check steps:
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Step |
Check/Operation |
Solution |
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1 |
Is the FDM128 display using the correct rated voltage? |
Verify the power supply connections and levels. |
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2 |
Is the power supply off or disconnected? |
Follow the instructions in the Instruction Sheet to reconnect the power supply. |
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3 |
Is the backlight lit? |
Potential detected problem with the FDM128 display . Contact your local Schneider Electric distributor. |
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4 |
Is the problem resolved? |
If none of the previous steps resolve the detected problem, verify the hardware. |
Display Replacement
The following replacements are available:
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Front part only: reference HMIS85
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Whole device, including the front part: reference LV434128
For information about how to reinstall the product, see the Instruction Sheet.
Connected Equipment Cannot Be Used
If the FDM128 display does not communicate with connected equipment, perform the following check steps:
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Step |
Check/Operation |
Solution |
|---|---|---|
|
1 |
Is the power supply off or disconnected? |
Verify the power supply connections and levels. |
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2 |
Is the communication cable connected correctly? |
For more information about cable diagrams, refer to FDM128 Ethernet Display for Eight Devices Instruction Sheet . |
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3 |
Is the problem resolved? |
If none of the previous steps resolve the communication problem, then check the hardware. |