28
Savona, Anzio, Ravenna, Roma Use, Care, and Installation Guide
ZSA, ZAN, ZRV, ZRO
WALL
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.
The switch board or control board
is defective.
Change the switch board or control
board.
The switch board or control board
wirings are disconnected.
Make sure the wirings at the switch
board and control board are 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 switch board or control board
is defective.
Change defective part.
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.
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