Zephyr Milano ZMI-M90BS Guide D'utilisation, D'entretien Et D'installation page 17

TROUBLESHOOTING PROCEDURES FOR MILANO WALL
Issue Cause
After installation, 1. The power source is not turned ON.
the unit doesn't
is not connecting properly.
3. The wires on the control board are loose.
4. The switch board and control board wirings are
disconnected.
5. The switch board or control board is defective.
1. The blower cable is disconnected.
blower is not
turning.
2. The blower is defective, possibly seized.
3. The thermally protected system detects if the
blower is too hot to operate and shuts the blower
down.
4. The switch board or control board is defective.
The unit is 1. The motor is not secure in place.
vibrating.
2. Damaged blower wheel.
3. The hood is not secured in place.
The LCD screen 1. The cable between the switch and control board
is disconnected.
The unit is
whistling.
2. The duct pipe connections are not sealed or
connected properly.
The blower is 1. Defective LED bulb.
2. The LED bulb wire is loose.
lights are not.
The speed levels 1. Using the wrong size of ducting.
of the blower
2. ACT enabled blower CFM set to 290 or 390
sound the same.
CFM.
The hood is 1. The hood might be hanging too high from the
not venting out
properly.
2. The wind from the opened windows or opened
ventilation of the hood.
4. The direction of duct opening is against the wind. 4. Adjust the duct opening direction.
5. Using the wrong size of ducting.
Mesh Filter is
vibrating.
What to do
power is ON.
connected properly.
connected properly.
board and control board are connected
properly.
5. Change the switch board or control board.
all cables are connected properly.
2. Change the blower.
3. The blower will function properly after the
thermally protected system cool down.
4. Change defective part.
1. Tighten the motor in place.
2. Replace the blower.
switch and control board.
connections are sealed properly.
1. Change the LED bulb.
board and the LED light bulbs. Reconnect any
loose wires.
1. Change the ducting to at least 8" or higher.
2. Noise level distinction between some speeds
may be minimal when ACT enabled blower is
set to 290 or 390 CFM.
the bottom of the hood within 26" and 34"
range.
2. Close all the windows and doors to eliminate
duct opening.
5. Change the ducting to at least 8" or higher for
the internal blower.
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