What is a  'Communication I/F error'
and how do I fix it?

<Error Description>
THE FC386 PCB did not communicate properly with the MULTI PCB during the power on initialization of the System.

<Check Items>

• Turn off the power. REMOVE the FC386 PCB and the MULTI PCB, and verify they have compatible software. This may be of concern if one of the boards has been replaced.
• Verify correct installation of all removable IC chips on both the FC386 and Multi PCBs. Verify that the FC386 PCB battery is properly installed, and less than three (3) years old.
• Reinstall the FC386 and MULTI PCBs. Ensure that the boards are properly seated.
• Verify that the Main Unit is not located near any strong electrical or magnetic fields.
• Verify the MAIN UNIT input voltage is within specifications and the power cable is properly connected.
• Turn on the power. If the Abnormal is not corrected, replace the MULTI PCB.  Refer to Section 8.3 of the manual for more detailed information.
• If the problem still exists, replace the FC386 PCB.  Refer to Section 8.3 of the manual for more detailed information.
• If the problem persists, replace the entire Main Unit.  Refer to Section 8.3 of the manual for more detailed information.

If this did not answer your question or problem, please contact our support department via email, contact form or call (586) 781-2100

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