Technical Support US: 888-443-2751
Technical Support INTL: 316-943-2751
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The VFD has internal diagnostics, and may show the following ERROR codes:
F004 DC bus voltage fell below minimum value.
F005 DC bus voltage exceeded maximum value.
F007 Motor Overload.
F008 Heat sink Over Temp.
F013 Ground Fault.
F081 Comm Loss- RS-485 port stopped communicating.
If any of the above error codes are displayed, then follow these steps to clear them.
1. Remove VFD control box access panel
2. Determine cause of error code
3. Resolve the condition that is causing error
4. Cycle the VFD Power
Circuit breaker must be turned off for ten (10) seconds to allow complete shut down
of VFD before turning back on
If your hood still does not function properly, XLT has qualified customer service personnel
that can provide assistance on any type of XLT equipment problem you may experience. Custom-
er Service is available 24/7/365 at 888-443-2751, or visit
For repairs or maintenance of the fire suppression system and components, contact the lo-
cal ANSUL dealer or XLT for assistance.
HOOD TROUBLESHOOTING