15
T
roubleshooting
TROUBLESHOOTING PROCEDURES FOR ZLC
Issue
Cause
What to do
After installation,
the unit doesn’t
work.
1. The power source is not turned ON.
1. Make sure the circuit breaker and the unit’s
power is ON.
2. The power line and the cable locking connector
is not connecting properly.
2. Check the power connection with the unit is
connected properly.
3. The switch board or control board wirings are
disconnected.
3. Make sure the wirings at the switch board and
control board are connected properly.
4. The switch board or control board is defective.
4. Change the switch board or control board.
Light works, but
blower is not
turning.
1. The blower is defective, possibly seized.
1. Change the blower.
2. The thermally protected system detects if the
blower is too hot to operate and shuts the blower
down.
2. The blower will function properly after the
thermally protected system cool down.
3. Damaged capacitor.
3. Change the capacitor.
4. The switch board or control board is defective.
4. Change defective part.
The speed levels
of the blower
sound the same.
1. Using the wrong size or type of ducting.
1. Change the duct size to at least 6” round or
higher and change the duct type to rigid metal
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The unit is
vibrating.
1. The blower is not secured in place.
1. Tighten the blower in place.
2. Damaged blower wheel.
2. Replace the blower.
3. The hood is not secured in place.
3. Check the installation of the hood.
The blower is
working, but the
lights are not.
1. Defective LED bulb.
1. Change the LED bulb.
2. The LED wire connection to the control board is
disconnected.
2. Check the LED wire connection at the control
board.
3. The LED bulb connector is disconnected.
3. Check the LED bulb connector.
The unit turns on
by itself.
1. A spot light or kitchen lamp is shining directly
onto the switch controls.
1. The switch controls are light sensative. A
direct light source onto the switch controls
may disrupt switch functions.
The hood is
not venting out
properly.
1. The hood might be hanging to high from the
cook top.
1. Adjust the distance between the cook top and
the bottom of the hood within 26” and 34”
range.
2. The wind from the opened windows or opened
doors in the surrounding area are affecting the
ventilation of the hood.
2. Close all the windows and doors to eliminate
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3. Blockage in the duct opening or ductwork.
3. Remove all the blocking from the duct work or
duct opening.
4. The direction of duct opening is against the wind.
4. Adjust the duct opening direction.
5. Using the wrong size of ducting.
5. Change the ducting to at least 6” or higher.
Mesh Filter is
vibrating.
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Summary of Contents for Luce Island ZLC-M90AS
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