Installation Guide
20
Pyramid Use, Care, and Installation Guide
PYRAMID
UNDERCABINET
CORE
Troubleshooting
Possible Problem Possible Cause Solutions
After installation, the 
unit doesn’t work.
The power source is not turned 
ON.
Make sure the circuit breaker and the 
unit’s power is ON.
The power line and the cable 
locking connector is not 
connecting properly.
Check the power connection with the 
unit is connected properly.
Light works, but 
blower is not turning.
The blower is defective, possibly 
seized. 
Change the blower.
The thermally protected system 
detects if the blower is too hot 
to operate and shuts the blower 
down.
The blower will function properly after 
the thermally protected system cool 
down.
Damaged capacitor. Change the capacitor.
The motor wire is not connected. Make sure the motor wire is plugged into 
the molex connector.
The unit is vibrating. The blower is not secured in place. Tighten the blower in place.
Damaged blower wheel. Replace the blower.
The hood is not secured in place. Check the installation of the hood.
The unit is whistling. A filter is not in the correct 
position.
Adjust the filters until the whistling stops.
The duct pipe connections are not 
sealed or connected properly.
Check the duct pipe connections to be 
sure all connections are sealed properly.
The blower is working, 
but the lights are not.
The LED light connector is 
disconnected.
Connect the LED light connector.
Defective LED light. Change the LED light.
LumiLight LEDs flicker 
when changing speed 
levels.
N/A This is a normal operation and the hood 
is working correctly.










