22
HOOD TROUBLESHOOTING
HIGH
VOLTAGE
Removing the hood VFD cover panel exposes high voltage. Proceed with cau
tion and read the following the instructions carefully.
Initial troubleshooting of the hood:
1. Remove panel covering VFD to check and see if the circuit breaker is tripped.
2. Check the actual frequency of the VFD controller. To access the actual frequency, press
<ESC> button until the Display Mode shows DOOI.
3. Check to see that the breaker in the service panel is not tripped.
4. Make sure the Switch Relocation Cords
(SRC)
are properly installed to the oven(s).
5. Check to see that the grease filters are clean & installed properly.
6. Check to see if the exhaust fan is rotating in the correct rotation. To verify fan rotation,
remove the lid on the exhaust fan. Visually inspect rotation in accordance with label on fan
housing.
Hood Machine Control LED Lights:
1. When the Red LED is lit it indicates an MC error.
2. When the first Green LED is lit it indicates power to MC.
3. When the second Green LED is lit it indicates that the exhaust fan on.
4. When the third Green LED is lit it indicates the MC communication
to the VFD.
The VFD has internal diagnostics, and may show the following ERROR codes:
• F004 DC bus voltage fell below min value.
• FOOS DC bus voltage fell below max value.
• F007 Motor Overload.
• F008 Heat sink Over Temp.
• F013 Ground Fault.
• F08 l Comm Loss- RS485 port stopped communicating.
If any of the above error codes are displayed, then follow these steps to clear them.
1. Record error code on HUI.
2. Take the cover off the hood.
3. Cycle power with circuit breaker
If the corrective actions listed above do not correct the problem, then XLT has qualified
customer service personnel that can provide assistance on any type of XLT Oven or AVI Hood
problem you may experience. Customer Service is available at 888-443-2751 24/7 /365, or visit
www.xltov
e
ns.com
.
For repairs or maintenance of the fire suppression system and components, contact the lo
cal Ansul dealer or XL T for assistance.
Technical Support US: 888-443-2751
S
i
mple
.
Smart.
Technical Support INTL: 316-943-2751