27
M.A.R.V.E.L. Installation Operation & Maintenance Manual
MAR
VELIO&M/0220
09/re
v1/EN
FAQ’s (Frequently Asked Questions)
Problem
Probable Cause
Solution
Laser on CE Alignment Tool
does not work
Battery low
Replace battery. Unscrew end of tool,
remove the battery and replace with
same type.
Exhaust damper blades do
not open or close
Loose set screws
Tighten
In-operable motor
Replace
No suction at hood
VFD tripped
Check for error code, reset
Surface and duct temperature
sensors not activated
Push override button
